Charles W Carter

US Patent:

47897570, Dec 6, 1988

Filed:

Jul 17, 1987

Appl. No.:

7/074751

Inventors:

Charles G. Carter - Columbia MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C07C 9900

US Classification:

562445

Abstract:

The amine nitrogen of an amino carboxylic acid is formylated by reacting the amino carboxylic acid with formamide.

US Patent:

52155854, Jun 1, 1993

Filed:

Oct 25, 1991

Appl. No.:

7/782356

Inventors:

Narender P. Luthra - Columbia MD
Charles G. Carter - Silver Spring MD
Paul C. Scheiner - Maynard MA

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C04B 736

US Classification:

106806

Abstract:

A method of reclaiming unset cement compositions by mixing a polymethoxy polyphosphonate to the unset composition to cause long-term retardation of cement hydration and subsequently treating the composition with a set accelerator to reinitiate hydration.

US Patent:

50173065, May 21, 1991

Filed:

Nov 9, 1988

Appl. No.:

7/269209

Inventors:

Donald A. Bansleben - Columbia MD
Charles G. Carter - Silver Spring MD
Ranjit Kumar - Columbia MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C07F 909

US Classification:

25238923

Abstract:

A method of preparing phosphonate compositions comprising di-(phosphonomethyl) formal is disclosed which comprises (a) forming an intimate mixture of hydroxymethylphosphonic acid and formaldehyde or its condensates, said mixture having a least about 0. 5 equivalents of formaldehyde per equivalent of hydroxymethylphosphonic acid; and (b) subjecting said intimate mixture to a temperature of between about 100. degree. C. and 180. degree. C. for a time sufficient to allow the components to react to form a reacted mixture comprising di-(phosphonomethyl) formal. Di-(phosphonomethyl) formal, phosphonate compositions wherein at least about 20 more % of the phosphonate groups are present as di-(phosphonomethyl) formal, and phosphonate compositions which comprise hydroxymethylphosphonic acid and di-(phosphonomethyl) formal such that the mole ratio of phosphonate groups present as di-(phosphonomethyl) formal to phosphonate groups present as hydroxymethylphosphonate is at least about 1:3, as disclosed, may be used for corrosion inhibition in aqueous systems.

US Patent:

49816489, Jan 1, 1991

Filed:

Nov 9, 1988

Appl. No.:

7/269210

Inventors:

Ranjit Kumar - Columbia MD
Charles G. Carter - Silver Spring MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C23F 1116
C23F 1100

US Classification:

422 15

Abstract:

A process is disclosed for inhibiting corrosion of an iron based metal in contact with the system water in an aqueous system, which comprises incorporating into the system water an effective amount of bis-phosphonic acid ethers selected from the group consisting of compounds having the formula (HO). sub. 2 OP--R--(OR'). sub. n --OR--PO(OH). sub. 2 wherein each R is independently selected from the group consisting of methylene and ethylene, wherein R' is selected from the group consisting of methylene, ethylene and ethylene substituted with one or more methyl groups and wherein n is an integer from 0 to 4, and water soluble salts of said bis-phosphonic acid ethers. Advantageous corrosion inhibition using the bis-phosphonic acid ethers in combination with hydroxymethylphosphonic acid is also disclosed.

US Patent:

46925457, Sep 8, 1987

Filed:

Dec 12, 1986

Appl. No.:

6/940997

Inventors:

Charles G. Carter - Columbia MD

Assignee:

Stauffer Chemical Company - Westport CT

International Classification:

C07C14940

US Classification:

560 18

Abstract:

A method of preparing compounds of the formula ##STR1## wherein R is alkyl, alkenyl, benzyl or aromatic, R. sup. 1 is alkyl and X is halogen or nitro comprising reacting a compound of the formula ##STR2## wherein R. sup. 1 and X are defined as above with a mercaptan having the formula R--SH in the presence of an inorganic base and a polar aprotic solvent.

US Patent:

47087323, Nov 24, 1987

Filed:

Oct 24, 1986

Appl. No.:

6/922620

Inventors:

Charles G. Carter - Columbia MD

Assignee:

Stauffer Chemical Company - Westport CT

International Classification:

A01N 4350
C07D23928
C07D23930
C07D23924

US Classification:

71 92

Abstract:

Herbicidal compounds having the formula ##STR1## wherein R. sup. 1 is hydrogen, C. sub. 1 -C. sub. 4 alkyl, phenyl or substituted phenyl; R. sup. 2 is hydrogen or C. sub. 1 -C. sub. 4 alkyl; or R. sup. 1 and R. sup. 2 together are C. sub. 2 -C. sub. 5 alkylene; R. sup. 3 is hydrogen, C. sub. 1 -C. sub. 4 alkyl, phenyl or substituted phenyl, with the proviso that R. sup. 1 and R. sup. 3 are not both phenyl or substituted phenyl; R. sup. 4 is hydrogen or C. sub. 1 -C. sub. 4 alkyl; or R. sup. 3 and R. sup. 4 together are oxo; R. sup. 5 is hydrogen or C. sub. 1 -C. sub. 4 alkyl; R. sup. 6 is hydrogen or C. sub. 1 -C. sub. 4 alkyl; and R. sup. 7 and R. sup. 8 independently are (1) hydrogen; (2) halogen; (3) C. sub. 1 -C. sub. 4 alkyl; (4) C. sub. 1 -C. sub.

US Patent:

56437862, Jul 1, 1997

Filed:

Jan 27, 1995

Appl. No.:

8/379227

Inventors:

Peter A. Cohen - Bethesda MD
Brian J. Czerniecki - Gaithersburg MD
Charles Carter - Gaithersburg MD
Daniel H. Fowler - Bethesda MD
Hyun Kim - Rochester MN

Assignee:

The United States of America as represented by the Department of Health
and Human Services - Washington DC

International Classification:

C12N 500
C12N 506
A61K 3306
A61K 3514

US Classification:

435325

Abstract:

A method of isolating dendritic cells is described. This method involves elutriating peripheral blood samples in at least four flow rates from an elutriation rotor. Calcium ionophore is used to stimulate monocytes isolated during the process into dendritic cells. Treatments for diseases involving re-introduction of activated dentritic cells are also described.