Chidambar L Kulkarni

US Patent:

7267846, Sep 11, 2007

Filed:

Oct 6, 2004

Appl. No.:

10/960366

Inventors:

Praful Doshi - Poway CA, US
James Edward Fox - Cambridge, GB
Philip Gareth Bentley - Cambridge, GB
Jagvi Ramesh Patel - Roysten, GB
Chidambar L. Kulkarni - San Diego CA, US
Stephen D. Halbe - San Diego CA, US
Hananiah J. Dalton - La Jolla CA, US

International Classification:

B05D 1/32
B05D 1/40
C09D 11/10

US Classification:

427466, 522 81, 522 83, 522167, 522182, 522175, 522 64

Abstract:

The present invention recognizes that lenses, such as contact lenses, can be pigmented using an ink that includes oligomers, polymers or polymerizable monomers. The ink can be used to make images on or within the lens. Images made using these inks are may be digital or analogue and can be used in a variety of printing methods, including ink-jet printing.

US Patent:

20080062381, Mar 13, 2008

Filed:

Sep 12, 2007

Appl. No.:

11/900735

Inventors:

Praful Doshi - Poway CA, US
Chidambar Kulkarni - San Diego CA, US
Stephen Halbe - San Diego CA, US

International Classification:

G02C 7/04
B41J 2/01

US Classification:

351161000, 347102000, 35116000H, 351162000, 351177000

Abstract:

The present invention recognizes that lenses, such as contact lenses, can be modified and pigmented using an ink that includes oligomers, polymers or polymerizable monomers. The ink can be used to make images on or within the lens, or the ink may be similar to the material of the lens and be precisely deposited on the lens surface to create corrective radius at the exact location on the lens surface. The lens material may also be deposited by an inkjet printer to create a hybrid lens. Deposition of ink or other material may be digital or analogue signal and can be used in a variety of printing methods, including ink-jet printing.

US Patent:

45365547, Aug 20, 1985

Filed:

Feb 22, 1984

Appl. No.:

6/582362

Inventors:

Drahoslav Lim - San Diego CA
Chidambar L. Kulkarni - San Diego CA
Dennis A. Repella - San Diego CA

Assignee:

Barnes-Hind, Inc. - Sunnyvale CA

International Classification:

C08F22610
G03B 2146

US Classification:

526264

Abstract:

An interpenetrating network polymer is obtained by mixing hydrophilic monomer vinyl pyrrolidone and hydrophobic monomer (5-alkylene-m-dioxanyl) acrylic ester in the presence of at least two crosslinking agents and, optionally, hydroxyalkyl acrylic ester and catalysts and causing polymerization to occur. Contact lenses made from the polymer have high tensile strength and can absorb a high degree of water.

US Patent:

48618403, Aug 29, 1989

Filed:

Dec 3, 1986

Appl. No.:

6/937250

Inventors:

Drahoslav Lim - San Diego CA
Chidambar L. Kulkarni - San Diego CA

Assignee:

Barnes-Hind, Inc. - Sunnyvale CA

International Classification:

C08F 3008

US Classification:

5253265

Abstract:

Disclosed are a novel monomer, and oxygen-permeable copolymers made therefrom, as well as contact lenses made from said copolymers, wherein the novel monomer has the formula: ##STR1##.