Dilip K Chatterjee, Age 80Decatur, GA

6350014, Feb 26, 2002

Mar 1, 2000

09/516322

Donn B. Carlton - Hamlin NY
Dilip K. Chatterjee - Rochester NY
George W. Anstadt - Pittsford NY

Eastman Kodak Company - Rochester NY

B41J 204

347 54

Apparatus for printing an image using image forming materials having nanoparticles less than an average diameter of 500 nm. The apparatus defining a plurality of printing nozzles each of which prints a pixel on a receiver, the nanoparticles being effective in two states, in a first state it aggregates and will not flow through an ink jet printer nozzle and in a second state when subject to a force is flowable so as to be deposited on the receiver, such nanoparticles being bound to each other by Van der Waals forces in the first state and after deposition on the receiver. The apparatus includes a hopper for receiving the nanoparticles and defining a cavity into which the nanoparticles aggregate in the first state; and applies a force to the nanoparticles disposed in the hopper to cause them to be effective in the second state and deliver them to the nozzles where such nanoparticles flow and are deposited on the receiver.

6351879, Mar 5, 2002

Aug 31, 1998

09/143770

Edward P. Furlani - Lancaster NY
Syamal K. Ghosh - Rochester NY
Dilip K. Chatterjee - Rochester NY

Eastman Kodak Company - Rochester NY

H04R 1700

29 2535, 298901, 347 70, 347 68, 347 40, 427100

A method of making a printing apparatus configured for drawing fluid from a fluid reservoir and then ejecting droplets of fluid onto a receiver to form an image include the steps of providing an orifice manifold having a plurality of orifices each one of which in fluid communications with one of a plurality of piezoelectric pumps.

6361161, Mar 26, 2002

Mar 1, 2000

09/516086

George W. Anstadt - Pittsford NY
Dilip K. Chatterjee - Rochester NY
Donn B. Carlton - Hamlin NY

Eastman Kodak Company - Rochester NY

G01D 1100

347100, 106 3165

An image producing material which when deposited on a receiver produces an image comprised of nanoparticles selected to have an average diameter of less than 500 nm and arranged so as to be effective in two states, in a first state it aggregates and will not flow through an ink jet printer nozzle and in a second state when subject to a force is flowable so as to be deposited on the receiver, such nanoparticles being bound to each other by Van der Waals forces in the first state and after deposition on the reciever.

6367132, Apr 9, 2002

Aug 31, 1998

09/143944

Dilip K. Chatterjee - Rochester NY
Edward P. Furlani - Lancaster NY
Syamal K. Ghosh - Rochester NY

Eastman Kodak Company - Rochester NY

H04R 1700

29 2535, 298901, 427100, 4274193, 310332

A method of making a print head ( ) includes forming a body ( ) having a closed base ( ) and independent fluid containment compartments ( ) formed about the closed base ( ). A substantially planar piezoelectric transducer ( ) comprising a slab ( ) of piezoelectric material provides a means of enclosing each of the independent fluid containment compartments ( ). Each of the independent compartments has operably associated therewith one of a plurality of first electrodes ( ) arranged on a first surface ( ) of the slab ( ) of piezoelectric material and a portion of a second electrode ( ) arranged on an opposite second surface ( ). By applying a voltage to the first and second surface electrodes ( ) in a predetermined manner induces an electric field in a portion of the slab ( ) of piezoelectric material and thereby forces fluid composition through the independent fluid containment compartment ( ).

6458498, Oct 1, 2002

Feb 26, 2001

09/792913

Dilip K. Chatterjee - Rochester NY
Thomas N. Blanton - Rochester NY
Donn B. Carlton - Hamlin NY

Eastman Kodak Company - Rochester NY

G03G 1500

430 56, 320166, 307109

A charge containing element including a conductive layer; a dielectric layer formed on the conductive layer wherein the dielectric layer is formed by the thermal decomposition of an organic component of the dissolved metallo-organic material and a reaction of the metallic portion of the material with oxygen thereby causing the dielectric layer to have charge holding properties; and electrodes coupled to the element to permit the application or discharge of charge from the dielectric layer.

6491239, Dec 10, 2002

Mar 5, 2001

09/799314

Thomas N. Blanton - Rochester NY
Dilip K. Chatterjee - Rochester NY
Debasis Majumdar - Rochester NY

Eastman Kodak Company - Rochester NY

B02C 1720

241 21, 241184

The present invention is a process for the preparation of a solid particles of a compound. The process includes milling the compound in the presence of milling media composed of ceramic particles having an average size of 0. 1 to 20 mm. The ceramic particles are composed of a tetragonal zirconia core and a continuous hard case shell comprising cubic zirconia, monoclinic zirconia, spinel or zircon.

6572810, Jun 3, 2003

Jan 29, 2001

09/771541

Dilip K. Chatterjee - Rochester NY
Syamal K. Ghosh - Rochester NY
Donn B. Carlton - Hamlin NY
Joseph A. Manico - Rochester NY

Eastman Kodak Company - Rochester NY

B29C 4500

2643286, 2643281

A method of making an injection molded article, including the steps of: mixing at a temperature of at least 100Â C. polymeric materials having a thermal conductivity in the range of 0. 001 to 0. 01 cal/cm-sec-Â C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0. 101 cal/cm-sec-Â C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine to form the article.

6578245, Jun 17, 2003

May 18, 2000

09/573511

Dilip K. Chatterjee - Rochester NY
Edward P. Furlani - Lancaster NY
Syamal K. Ghosh - Rochester NY

Eastman Kodak Company - Rochester NY

H04R 1700

29 2535, 298901, 427100, 427 96, 310328, 310331, 347 68, 347 71

A method of making a print head ( ) includes forming a body ( ) having a closed base ( ) and independent fluid containment compartments ( ) formed about the closed base ( ). A substantially planar piezoelectric transducer ( ) comprising a slab ( ) of piezoelectric material provides a means of enclosing each of the independent fluid containment compartments ( ). Each of the independent compartments has operably associated therewith one of a plurality of first electrodes ( ) arranged on a first surface ( ) of the slab ( ) of piezoelectric material and a portion of a second electrode ( ) arranged on an opposite second surface ( ). By applying a voltage to the first and second surface electrodes ( ) in a predetermined manner induces an electric field in a portion of the slab ( ) of piezoelectric material and thereby forces fluid composition through the independent fluid containment compartment ( ).