David G Wertz

US Patent:

56770294, Oct 14, 1997

Filed:

Dec 12, 1996

Appl. No.:

8/764033

Inventors:

Dusan C. Prevorsek - Morristown NJ
Gary A. Harpell - Morristown NJ
David Wertz - Princeton NJ

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

B32B 512

US Classification:

428113

Abstract:

A flexible article of manufacture especially suitable for use as a ballistic resistant body armor which comprises two or more layers, at least one of said layers being a fibrous layer, and at least one of said layers being a polymeric layer in contact with and bound to all or portion of said fibrous layer.

US Patent:

43340458, Jun 8, 1982

Filed:

Dec 5, 1980

Appl. No.:

6/213530

Inventors:

Tse C. Wu - Morristown NJ
Dusan C. Prevorsek - Morristown NJ
David H. Wertz - Morristown NJ

Assignee:

Allied Corporation - Morristown NJ

International Classification:

C08L 6900
C08L 6702

US Classification:

525439

Abstract:

A monomeric aromatic dicyanate is purified to remove color forming impurities, combined with a zinc salt catalyst and cured first below 200. degree. C. and then for a limited time at or above 200. degree. C. , either alone or in admixture with or on a thermoplastic polymer. For example, purified 2,2-bis(4-cyanatophenyl)propane is purified, combined with a poly(ester carbonate) and zinc chloride, and then cured at increasing temperatures from 150. degree. C. to 250. degree. C.

US Patent:

56128940, Mar 18, 1997

Filed:

Feb 8, 1995

Appl. No.:

8/390600

Inventors:

David H. Wertz - Princeton NJ

International Classification:

G06F 1750

US Classification:

364496

Abstract:

A computerized molecular modeling system is provided which graphically displays at least an initial and most likely structure of a molecule utilizing energy minimization and/or molecule dynamics techniques. The system utilizes a sensitivity factor to determine how often the less sensitive interactions, especially non-bonded interaction in a molecule should be recalculated during an energy minimization or molecular dynamics procedure. The sensitivity factor is based on each interaction's sensitivity to changes in the positions of the atoms that comprise it.

US Patent:

44143664, Nov 8, 1983

Filed:

Jun 4, 1982

Appl. No.:

6/384857

Inventors:

Tse C. Wu - Morristown NJ
Dusan C. Prevorsek - Morristown NJ
David H. Wertz - Morristown NJ

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

C08L 6900
C08L 6702

US Classification:

525439

Abstract:

Purified aromatic dicyanates are cured with a catalyst which is an Mn(II), Ag(II), Fe(III), Bi(III), In(III) or Hf(IV) salt at 150. degree. -200. degree. C. and then at 200. degree. -300. degree. C. for a time sufficient to cure the dicyanate without causing color formations to the extent of a Yellowness Index over 30. In some forms the dicyanate is combined with the catalyst and a thermoplastic.