Christopher M Tusa

Address:

1518 Deer Path, Raymore, MO 64083

Phone:

8163188431

VIN:

4A3AK34T77E009373

Make:

MITSUBISHI

Model:

ECLIPSE

Year:

2007

US Patent:

7049456, May 23, 2006

Filed:

Mar 7, 2003

Appl. No.:

10/383273

Inventors:

Vidyanatha A. Prasad - Leawood KS, US
Robert D. Ingalls - Portage MI, US
Stephen C. Slahck - Independence MO, US
Christopher M. Tusa - Raymore MO, US

Assignee:

Bayer Cropscience LP - Research Triangle Park NC

International Classification:

C07F 9/165

US Classification:

558 87

Abstract:

The invention relates to a method of preparing O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioates by treating O,O-dialkyl dithiophosphoric acids with a base in the substantial absence of organic solvent to obtain O,O-dialkyl dithiophosphoric acid salts that are in turn treated with thioalcohol derivatives to form the O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioates.

US Patent:

20040167348, Aug 26, 2004

Filed:

Feb 26, 2003

Appl. No.:

10/374459

Inventors:

Vidyanatha Prasad - Leawood KS, US
Robert Ingalls - Portage MI, US
Stephen Slahck - Independence MO, US
Christopher Tusa - Raymore MO, US
Paul Nagy - Meerbusch, DE
Michael Newcomer - Kansas City MO, US
Donald Smith - Liberty MO, US

International Classification:

C07F009/02

US Classification:

558/146000

Abstract:

The invention relates to a method of purifying an O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioate by purging a sample containing a volatile and the O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioate with a gas.

US Patent:

52681777, Dec 7, 1993

Filed:

Aug 6, 1990

Appl. No.:

7/563371

Inventors:

Horace G. Barnett - Kansas City MO
Christopher M. Tusa - Grandview MO

Assignee:

Miles Inc. - Pittsburgh PA

International Classification:

A01N 2518

US Classification:

424405

Abstract:

A carbonate of an alkali metal is added to an azinphos-methyl powder formulation in an amount such that the carbonate is at least 10% by weight of the total mixture. Sodium bicarbonate is the preferred carbonate. The resultant mixtures are characterized by a reduced tendency toward deflagration at temperatures below 200. degree. C.

US Patent:

59224045, Jul 13, 1999

Filed:

Sep 29, 1997

Appl. No.:

8/939826

Inventors:

Vidyanatha A. Prasad - Leawood KS
Klaus Jelich - Overland Park KS
Christopher M. Tusa - Kansas City MO
Daniel E. Terry - Liberty MO
Stephen C. Slahck - Blue Springs MO
Scott P. Hensley - Kansas City MO

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

B05D 700
A61K 3166
C07F 940

US Classification:

427220

Abstract:

The present invention relates to an integrated process for synthesizing dimethyl (2,2,2-trichloro-1-hydroxyethyl)-phosphonate and a process for impregnating the dimethyl (2,2,2-trichloro-1-hydroxyethyl)-phosphonate on to inert carrier granules. The process involves adding dimethyl phosphite to a reaction mixture containing chloral under anhydrous, inert conditions. The molar ratio of chloral to dimethyl phosphite used in the reaction mixture is from about 1. 0:1. 0 to about 1. 1:1. The impregnation process involves transferring molten dimethyl (2,2,2-trichloro-1-hydroxyethyl)-phosphonate into a process vessel and discharging weighed aliquots into a formulation vessel to form a granular product containing dimethyl (2,2,2-trichloro-1-hydroxyethyl)-phosphonate.