David C Scheer

US Patent:

59121742, Jun 15, 1999

Filed:

Nov 20, 1995

Appl. No.:

8/559894

Inventors:

David Scheer - Guilford CT
Bernard M. Babior - San Diego CA

International Classification:

C12N 500
A61K 3514

US Classification:

435374

Abstract:

Methods of stabilizing lymphocytes and/or stem cells obtained from a mammal by suspending them in an aqueous medium comprising gelatin.

US Patent:

60807466, Jun 27, 2000

Filed:

Oct 16, 1991

Appl. No.:

7/776895

Inventors:

David I. Scheer - Branford CT

International Classification:

A61K 716
A61K 7035
A61K 742

US Classification:

514258

Abstract:

Methods and compositions for preventing or treating cytomegalovirus infections by the use of carbocyclic analogues of purine and pyrimidine nucleosides.

US Patent:

52100960, May 11, 1993

Filed:

Jul 10, 1991

Appl. No.:

7/728896

Inventors:

David I. Scheer - Guilford CT

Assignee:

Chai-Tech Corporation - Greenvale NY

International Classification:

A61K 34295

US Classification:

514501

Abstract:

Compositions having significant activity as antiviral agent are disclosed containing, as an active component, a compound having the structural formula: ##STR1## wherein R. sub. 1 and R. sub. 1' are the same or different and each is an alkyl group, a phenyl group or a substituted derivative of a phenyl group; wherein R. sub. 2 and R. sub. 2' are the same or different and each is hydrogen, an unbranched alkyl group, a halide or a group having the structure ##STR2## wherein R is hydrogen, an alkoxide group, an alkyl group, or OH; wherein R. sub. 3 and R. sub. 3' are the same or different and each is hydrogen or an alkyl group; wherein X and X' are the same or different and each is a water soluble group having weak to intermediate ligand field strength; and Q. sup. - is a soluble, pharmaceutically acceptable negative ion. Methods of use of the inventive compositions are also disclosed.

US Patent:

51068419, Apr 21, 1992

Filed:

Mar 30, 1990

Appl. No.:

7/502294

Inventors:

David I. Scheer - Guilford CT

Assignee:

Chai-Tech Corporation - Greenvale NY

International Classification:

A61K 3133
A61K 31555

US Classification:

514185

Abstract:

Compositions having significant activity as antiviral agent are disclosed containing, as an active component, a compound having the structural formula: ##STR1## wherein R. sub. 1 and R. sub. 1' are the same or different and each is an alkyl group, a phenyl group or a substituted derivative of a phenyl group; wherein R. sub. 2 and R. sub. 2' are the same or different and each is hydrogen, an unbranched alkyl group, a halide or a group having the structure ##STR2## wherein R is hydrogen, an alkoxide group, an alkyl group, or OH; wherein R. sub. 3 and R. sub. 3' are the same or different and each is hydrogen or an alkyl group; wherein X and X' are the same or different and each is a water soluble group having weak to intermediate ligand field strength; and Q. sup. - is a soluble, pharmaceutically acceptable negative ion. Methods of use of the inventive compositions are also disclosed.