People Background Check
Find People:

Mark C Leifer, Age 70Boulder, CO

Get Report
Known as:
Mark Curtis Leifer Mark Anne Leifer Mark C Lelfer

Mark Leifer Phones & Addresses

Boulder, CO

Fremont, CA

Menlo Park, CA

San Francisco, CA

1666 Bear Mountain Dr, Boulder, CO 80305 (303) 543-1065

Work

Position: Professional/Technical

Education

Degree: Graduate or professional degree

Emails

m***[email protected]

Mentions for Mark C Leifer

Career records & work history

Medicine Doctors

Mark H. Leifer

Specialties:
Gastroenterology
Work:
Gastrointestinal Assocs IncGastrointestinal Associates Inc
2793 Shawnee Rd, Lima, OH 45806
(419) 227-8209 (phone) (419) 222-6007 (fax)
Site
Education:
Medical School
Johns Hopkins University School of Medicine
Graduated: 1977
Procedures:
Colonoscopy, Endoscopic Retrograde Cholangiopancreatography (ERCP), Esophageal Dilatation, Hemorrhoid Procedures, Sigmoidoscopy, Upper Gastrointestinal Endoscopy
Conditions:
Abdominal Hernia, Acute Myocardial Infarction (AMI), Acute Pancreatitis, Acute Renal Failure, Anal Fissure, Anemia, Anxiety Phobic Disorders, Atrial Fibrillation and Atrial Flutter, Benign Polyps of the Colon, Candidiasis, Cardiac Arrhythmia, Celiac Disease, Cholelethiasis or Cholecystitis, Chronic Pancreatitis, Chronic Renal Disease, Cirrhosis, Constipation, Dementia, Dermatitis, Diabetes Mellitus (DM), Disorders of Lipoid Metabolism, Diverticulitis, Diverticulosis, Esophagitis, Gastritis and Duodenitis, Gastroesophageal Reflux Disease (GERD), Gastrointestinal Hemorrhage, Heart Failure, Hemolytic Anemia, Hemorrhagic stroke, Hemorrhoids, HIV Infection, Hypertension (HTN), Hypothyroidism, Infectious Liver Disease, Inflammatory Bowel Disease (IBD), Intestinal Obstruction, Iron Deficiency Anemia, Irritable Bowel Syndrome (IBS), Ischemic Bowel Disease, Ischemic Heart Disease, Ischemic Stroke, Malignant Neoplasm of Colon, Malignant Neoplasm of Esophagus, Overweight and Obesity, Pancreatic Cancer, Peptic Ulcer Disease, Peripheral Nerve Disorders, Pneumonia, Rectal, Abdomen, Small Intestines, or Colon Cancer, Rheumatoid Arthritis, Sarcoidosis, Septicemia, Substance Abuse and/or Dependency, Systemic Lupus Erythematosus, Urinary Incontinence, Venous Embolism and Thrombosis, Ventral Hernia, Viral Pneumonia, Vitamin B12 Deficiency Anemia
Languages:
English
Description:
Dr. Leifer graduated from the Johns Hopkins University School of Medicine in 1977. He works in Lima, OH and specializes in Gastroenterology. Dr. Leifer is affiliated with Lima Memorial Hospital and St Ritas Medical Center.

Mark Leifer resumes & CV records

Resumes

Mark Leifer Photo 16

Staff Consultant

Location:
Boulder, CO
Industry:
Research
Work:
Ball Aerospace
Staff Consultant Ericsson 2000 - 2006
Senior Program Manager Arraycomm 1998 - 2000
Engineering Manager and Senior Scientist Varian Medical Systems 1991 - 1998
R and D Manager and Senior Engineer
Education:
Stanford University
Doctorates, Doctor of Philosophy, Applied Physics Stanford University
Bachelors, Bachelor of Science, Physics
Skills:
Rf, Matlab, Systems Engineering, Wireless, Antennas, Telecommunications, Program Management, R&D, Electromagnetics, Project Management, Engineering, Algorithm Development, Microwave, Ms Project, Agile Methodologies, Medical Imaging, Physics
Mark Leifer Photo 17

Mark Leifer

Publications & IP owners

Us Patents

Method And Apparatus For Sharing Power

US Patent:
6459171, Oct 1, 2002
Filed:
Jul 21, 2000
Appl. No.:
09/620949
Inventors:
Mark C Leifer - Fremont CA
Assignee:
Arraycomm, Inc. - San Jose CA
International Classification:
H02J 400
US Classification:
307 52, 307 24, 307 29
Abstract:
A power sharing apparatus and method. In one embodiment, a method of sharing power includes switchably coupling and decoupling each of a plurality of power sources to deliver at least a portion of power to a shared power supply. Each of the power sources corresponds to one of a plurality of applications. The method also includes adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to an amount of usage by the application corresponding to the respective power source.

Null Deepening For An Adaptive Antenna Based Communication Station

US Patent:
7139592, Nov 21, 2006
Filed:
Jun 21, 1999
Appl. No.:
09/336933
Inventors:
Mark C. Leifer - Fremont CA, US
Tibor Boros - Sunnyvale CA, US
Mitchell D. Trott - Mountain View CA, US
Louis C. Yun - Santa Clara CA, US
Assignee:
ArrayComm LLC - San Jose CA
International Classification:
H04M 1/00
US Classification:
4555621, 4552772, 4552781, 375349
Abstract:
A method and apparatus is described for modifying a smart antenna processing strategy determined from a set of signals received at an array of antenna elements of a wireless station, such as a set of weights for processing received antenna signals or forming a set of antenna signals for transmission. The method and apparatus uses the signatures of one or more interferers to produce a modified processing strategy that improves the nulling to the one or more interferers in that, when the modified strategy is applied on the downlink, the transmit signal strength in the direction of the one or more interferers is decreased, and, when the modified strategy is applied on the uplink, the sensitivity to signals from the direction of the one or more interferers is decreased.

Null Deepening For An Adaptive Antenna Based Communication Station

US Patent:
7751854, Jul 6, 2010
Filed:
Sep 19, 2006
Appl. No.:
11/523971
Inventors:
Mark C. Leifer - Fremont CA, US
Tibor Boros - Sunnyvale CA, US
Mitchell D. Trott - Mountain View CA, US
Louis C. Yun - Milpitas CA, US
Assignee:
Intel Corporation - Santa Clara CA
International Classification:
H04M 1/00
US Classification:
4555621, 4552772, 4552781, 375349
Abstract:
A method and apparatus is described for modifying a smart antenna processing strategy determined from a set of signals received at an array of antenna elements of a wireless station, such as a set of weights for processing received antenna signals or forming a set of antenna signals for transmission. The method and apparatus uses the signatures of one or more interferers to produce a modified processing strategy that improves the nulling to the one or more interferers in that, when the modified strategy is applied on the downlink, the transmit signal strength in the direction of the one or more interferers is decreased, and, when the modified strategy is applied on the uplink, the sensitivity to signals from the direction of the one or more interferers is decreased.

Passive Proximity Sensor Method And Apparatus

US Patent:
8018371, Sep 13, 2011
Filed:
Dec 12, 2008
Appl. No.:
12/316574
Inventors:
Dean A. Paschen - Lafayette CO, US
William G. Newhall - Boulder CO, US
Mark C. Leifer - Boulder CO, US
Assignee:
Ball Aerospace & Technologies Corp. - Boulder CO
International Classification:
G01S 13/04
G01S 7/02
G01S 13/00
US Classification:
342 90, 342 27, 342 82, 342 89, 342175, 342195
Abstract:
A passive proximity detection system and method are provided. A transmitted signal, such as a communication signal, is sampled and placed in memory. A version of the transmitted signal, reflected by a target in the vicinity of the transmitting antenna, is sampled and compared to the stored reference sample. Correlation between the reference and reflected samples indicates the presence of a target in the vicinity of the transmitting antenna. Processing of the signals can include frequency shifts to account for Doppler shifts in the reflected energy as a result of a non-zero relative radial velocity of the target. Multiple antennas for receiving reflected energy can be provided to enhance the coverage area of the system, and/or to provide information regarding the relative location of a target. In addition, signals from multiple transmitting antennas can be used as sources of energy for probing the vicinity of those antennas for targets.

Auto-Configuration And Discovery Of Portable Telecommunication System

US Patent:
8027272, Sep 27, 2011
Filed:
Apr 18, 2008
Appl. No.:
12/105679
Inventors:
Sethuraman Ramachandran - Erie CO, US
Amy Derbyshire - Boulder CO, US
Janardan Sethi - Erie CO, US
Douglas A. Sharp - Longmont CO, US
Joseph Meagher - Lafayette CO, US
Mark Bailey - Louisville CO, US
Mark Leifer - Boulder CO, US
Mark Gibbard - Boulder CO, US
Ramesh Ramiah - Troy MI, US
Raghavan Srinivasan - Berkeley CA, US
Mitch Cooper - Frederick CO, US
Assignee:
Telefonaktiebolaget L M Ericsson (Publ) - Stockholm
International Classification:
H04L 12/28
US Classification:
370254, 379342, 710316
Abstract:
A portable telecommunications system (PTS), and discovery and update protocol provides an ad-hoc system in which PTS systems can detect one another over a wide area network (WAN). The system may be compact in a way that allows mobility and rapid deployment with minimal on-site configuration. PTS systems exchange multicast packets and peer-to-peer data exchanges. A protocol manager sets up these communications channels, manages exchanges between PTS systems, and passes the data to or from internal system nodes. The protocol manager also performs key oversight functions such as signaling to other systems that a PTS is joining or leaving the community, keeping track of which other PTS systems are in the community and active, and determining when data needs to be updated and exchanged.

Low-Profile Lens Method And Apparatus For Mechanical Steering Of Aperture Antennas

US Patent:
8068053, Nov 29, 2011
Filed:
Dec 15, 2009
Appl. No.:
12/638782
Inventors:
Nathan A. Stutzke - Westminster CO, US
Mark C. Leifer - Boulder CO, US
Bradley J. Tame - Thornton CO, US
Dean A. Paschen - Lafayette CO, US
Kiersten Kerby - Somerville MA, US
Assignee:
Ball Aerospace & Technologies Corp. - Boulder CO
International Classification:
G01S 7/28
US Classification:
342 75, 342 81, 342368, 343753, 343754
Abstract:
A low-profile lens element for steering a beam is provided. Specifically, the low-profile lens element is mechanically rotatable such that a beam can be steered in any direction within three-dimensional space. The lens element may include a number of discrete portions for differentially delaying adjacent discrete portions of a beam in order to effect beam steering. These discrete portions may vary in width. In addition, multiple lens elements may be provided.

Auto-Control Of Radiation Power In A Portable Telecommunication System

US Patent:
8135379, Mar 13, 2012
Filed:
Apr 18, 2008
Appl. No.:
12/105932
Inventors:
Sethuraman Ramachandran - Erie CO, US
Amy Derbyshire - Boulder CO, US
Janardan Sethi - Erie CO, US
Douglas A. Sharp - Longmont CO, US
Joseph Meagher - Lafayette CO, US
Mark Bailey - Louisville CO, US
Mark Leifer - Boulder CO, US
Mark Gibbard - Beaverton OR, US
Ramesh Ramiah - Troy MI, US
Raghavan Srinivasan - Berkeley CA, US
Mitch Cooper - Frederick CO, US
Assignee:
Telefoanktiebolaget L M Ericsson (Publ) - Stockholm
International Classification:
H04M 11/04
US Classification:
4554042, 455440, 455448
Abstract:
A portable telecommunications system (PTS) allows mobility and rapid deployment with minimal on-site configuration. PTS systems exchange multicast packets including location and identification information. A protocol manager sets up these communications channels, manages exchanges between PTS systems, and passes the data to or from internal system nodes. The PTS system detects when another PTS system is operating in close physical proximity and automatically perform actions, such as adjustment of transmission power level, to maintain service to the user base.

Quadrature Elliptical Birdcage Coil For Nmr

US Patent:
5986454, Nov 16, 1999
Filed:
Mar 21, 1997
Appl. No.:
8/823295
Inventors:
Mark Curtis Leifer - Fremont CA
Assignee:
Varian, Inc. - Palo Alto CA
International Classification:
G01V 300
US Classification:
324318
Abstract:
Angular and current distributions for an elliptical birdcage resonator are realized in a design that achieves constant electrical phase between adjacent legs of the coil. Equal peak currents in the driven legs of the orthogonal modes yields exact quadrature operation.

Possible Relatives

Jacob R Leifer  Jennifer A Leifer  Nancy L Leifer  Norman E Leifer  Robert S Leifer  Serena Leifer  Bennett R Leifer  Mark M Stamps  Mark L Stanberry  Mark R Stanczak 

NOTICE: You may not use PeopleBackgroundCheck or the information it provides to make decisions about employment, credit, housing or any other purpose that would require Fair Credit Reporting Act (FCRA) compliance. PeopleBackgroundCheck is not a Consumer Reporting Agency (CRA) as defined by the FCRA and does not provide consumer reports.