Stephen V Martin

US Patent:

39896919, Nov 2, 1976

Filed:

Jan 9, 1975

Appl. No.:

5/539669

Inventors:

Edward C. Taylor - Princeton NJ
Stephen F. Martin - Austin TX

Assignee:

Princeton University - Princeton NJ

International Classification:

C07D40106

US Classification:

260240R

Abstract:

4-[3-(3-vinyl-1-acetyl-4-piperidyl)-1-propenyl]-6-methoxyquinoline, the corresponding epoxide and related compounds, useful in the synthesis of Cinchona alkaloids, are prepared by introducing an ylid group in the 4-position of a suitably substituted quinoline and reacting this ylid with an N-acetyl-4-piperidineacetaldehyde.

US Patent:

55448810, Aug 13, 1996

Filed:

Jan 19, 1994

Appl. No.:

8/183389

Inventors:

Louis Rua - Plainsboro NJ
Stephen E. Martin - Jamesburg NJ

Assignee:

Webcraft Technologies, Inc. - North Brunswick NJ

International Classification:

A63F 306

US Classification:

273139

Abstract:

A scratch-off game card includes first and second sections. The first section is provided with a first set of game data covered by a substantially opaque scratch-off material. The second section is provided with a second set of game data covered by a substantially transparent material. The second section is further provided with a substantially transparent coating for marking the second section by rubbing with an object. The markings so made are erasable by, for example, pencil eraser or the like material.

US Patent:

56810652, Oct 28, 1997

Filed:

Dec 9, 1994

Appl. No.:

8/354893

Inventors:

Louis Rua - Plainsboro NJ
Christopher Tararuj - Trenton NJ
Stephen Martin - Jamesburg NJ

Assignee:

Webcraft Technologies, Inc. - Horsham PA

International Classification:

B42D 1500

US Classification:

283903

Abstract:

A piece of printed material has preprinted, hidden data and includes a structure which prevents premature or unauthorized revealing of the hidden lottery or gaming data. For example, an instant scratch-off lottery ticket according to the invention includes a substrate, an ink layer disposed on the substrate, the ink layer including hidden lottery data. An ink-receptive layer is provided between the ink layer and the substrate and includes a first security mechanism for preventing unauthorized detection of the hidden data. A second security mechanism is disposed between the ink-receptive layer and the substrate which further prevents unauthorized detection of the lottery data.