Kai SuMarietta, GA

6365074, Apr 2, 2002

Sep 30, 1999

09/409318

Kai C. Su - Alpharetta GA

Technology Resource International Corporation - Alpharetta GA

B29D 1100

264 17, 264 25, 264132, 425542, 425808

A method for labeling an identification mark on a lens for inventory control. The identification mark is placed onto the facing inside surface of a mold by an ink jet printer and is remained there when the lens-forming liquid is cured. Once the lens is formed, but before the demolding, the identification mark is transferred from the mold to the lens. The identification mark contains information identifying the lens properties such as the power of the lens and can be used for inventory control.

6716970, Apr 6, 2004

Oct 19, 2001

10/045959

William M. Hung - Alpharetta GA
Katrina L. Bergbauer - Decatur GA
Kai C. Su - Alpharetta GA
Guigui Wang - Cumming GA

Adjuvant Pharmaceuticals, LLC - Alpharetta GA

C08B 3708

536 20, 536124

The present invention is directed to a water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives and methods of preparing water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives comprising the steps of dissolving the chitosan or chitosan derivative into an aqueous acidic solution and reacting the chitosan or chitosan derivative with an acetylating agent in the presence of a phase transfer reagent. The present invention is further directed to a pharmaceutical preserving composition comprising: (a) at least one chitosan or chitosan derivative and (b) at least one buffer solution, as well as methods of preserving contact lens solutions and disinfecting contact lens using such composition.

6787070, Sep 7, 2004

Aug 23, 2001

09/938279

Kai C. Su - Alpharetta GA

Technology Resource International Corp. - Alpharetta GA

B29D 1100

264 11, 264 25, 249105, 425808, 425812

An apparatus and method for filling a mold for casting optical lens. Two molding shells and a closure member form a mold with a molding cavity. To fill the mold a fluid lens-forming material is introduced into the molding cavity through a casting opening formed in the closure member. Air is venting out during the filling process through a venting opening also formed in the closure member. Both the casting opening and the venting opening are located in the upper portion of the molding cavity but spaced apart from each other at an acute angle.

6872335, Mar 29, 2005

Mar 12, 2002

10/096428

Kai C. Su - Alpharetta GA, US
Richard Lu - Alpharetta GA, US

Technology Resource International Corporation - Alpharetta GA

B29D011/00

264 25, 264 22, 264 132, 264313, 249 82, 425395, 425808

An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The first portion and the second portion are pivotally coupled together at the bottom parts so that the top part of the first portion and the top part of the second portion can be closed to define a housing for receiving the mold assembly therein, wherein the top part of the first portion and the top part of the second portion can also be opened for receiving the mold assembly in the housing.

7114696, Oct 3, 2006

Aug 29, 2005

11/215361

Kai Su - Alpharetta GA, US
Richard Lu - Alpharetta GA, US

QSPEX, LLC - Alpharetta GA

B29D 11/00

249102, 249105, 249134, 425183, 425808, 425812

The present invention encompasses, in part, a method and apparatus for lens casting in which two molds, preferably formed of plastic, are interconnected or joined together via a ring to form a mold cavity having substantially the same dimensions of the lens to be formed therein. In one implementation the invention includes a the casting device comprising a plurality of front molds, each front mold formed of a plastic and having a lens-forming surface. The front molds are configured to form a plurality of lenses of different effective diameters. The casting device further includes a rear mold formed of a plastic and having a lens-forming surface; wherein the rear mold is configured to be paired with each of the plurality of front molds to form a plurality of lenses of different effective diameters.

7125967, Oct 24, 2006

Oct 8, 2003

10/681560

William M Hung - Alpharetta GA, US
Katrina L. Bergbauer - Decatur GA, US
Kai C. Su - Alpharetta GA, US
Guigui Wang - Cumming GA, US
Sherry Wages - Atlanta GA, US

Adjuvant Pharmaceuticals, LLC - Alpharetta GA

C08B 37/08
C07H 5/04

536 20, 536 553

Water-soluble chitosan having a low concentration of endotoxin is disclosed. Products containing the water-soluble chitosan are also disclosed. Methods of making and using water-soluble chitosan having a low concentration of endotoxin are further disclosed.

7220120, May 22, 2007

Jul 22, 2005

11/188223

Kai Su - Alpharetta GA, US
Richard Lu - Alpharetta GA, US
David Wright - Roswell GA, US
Debbie Makita - Lawrenceville GA, US

Qspex, LLC - Alpharetta GA

B28B 3/00

425808, 4251744, 249115, 249134, 264 25, 264 27

The present invention encompasses, in part, a method and apparatus for lens casting in which two molds, preferably formed of plastic, are interconnected or joined together via a ring to form a mold cavity having substantially the same dimensions of the lens to be formed therein. The invention is further directed to compositions and methods used in lens casting. In a first implementation the invention includes a mold having a ring having an interior periphery; a front mold formed of a plastic and having a lens-forming surface, an edge circumscribing the lens-forming surface that is sized to be complementarily received within a portion of the interior periphery of the ring, and a base having dimensions greater than the interior periphery; and a rear mold formed of a plastic and having a lens-forming surface.

7683039, Mar 23, 2010

Dec 24, 2003

10/746085

William M. Hung - Alpharetta GA, US
Katrina L. Bergbauer - Decatur GA, US
Kai C. Su - Alpharetta GA, US
Guigui Wang - Cumming GA, US

Adjuvant Pharmaceuticals, LLC - Alpharetta GA

A61K 31/765
A61K 31/785
C08B 37/08

514 55, 424 7804, 536 20

The present invention is directed to a water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives and methods of preparing water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives comprising the steps of dissolving the chitosan or chitosan derivative into an aqueous acidic solution and reacting the chitosan or chitosan derivative with an acetylating agent in the presence of a phase transfer reagent. The present invention is further directed to a pharmaceutical preserving composition comprising: (a) at least one chitosan or chitosan derivative and (b) at least one buffer solution, as well as methods of preserving contact lens solutions and disinfecting contact lens using such composition.