Yakov A Letuchy

US Patent:

6593414, Jul 15, 2003

Filed:

Jul 19, 2001

Appl. No.:

09/909222

Inventors:

Kenneth C. Benton - Cedar Rapids IA
Yakov A. Letuchy - Iowa City IA
James M. Quarles - Cedar Rapids IA

Assignee:

Penford Corporation - Bellevue WA

International Classification:

C08L 300

US Classification:

524502, 524501, 524387, 524388, 524376, 524377, 524378, 524571, 524575

Abstract:

Pressure sensitive adhesive compositions comprising (a) a synthetic polymer latex; and (b) an aqueous dispersion of thinned, derivatized starch are disclosed.

US Patent:

8129517, Mar 6, 2012

Filed:

May 21, 2007

Appl. No.:

11/751126

Inventors:

Yakov A. Letuchy - Iowa City IA, US
William E. Martin - Coralville IA, US
David W. Muller - Iowa City IA, US
Shawn Allen - Williamsburg IA, US
Shawn P. Walsh - Williamsburg IA, US

Assignee:

Integrated DNA Technologies, Inc. - Skokie IL

International Classification:

C07H 21/00
C08B 15/06
A61K 38/00
C07K 16/00

US Classification:

536 253, 536 30, 530333, 5303911

Abstract:

The disclosed invention pertains to improved oligonucleotide manufacturing methods, including novel support compositions that are optionally labeled, their methods of preparation and use. The compositions and methods are particularly well suited for high throughput oligonucleotide manufacturing in that the automated support recognition facilitates loading of the wells with the proper supports. In addition, the labeled supports can be used to confirm that each well of a multi-well plate, such as a 96 or 384 well plate, was properly loaded.

US Patent:

60403799, Mar 21, 2000

Filed:

Aug 13, 1998

Appl. No.:

9/133625

Inventors:

Gary Luebke - Olathe KS
Kenneth Curtis Benton - Cedar Rapids IA
Yakov A. Letuchy - Iowa City IA

Assignee:

Penford Corporation - Bellevue WA

International Classification:

C08L 304

US Classification:

524734

Abstract:

The invention provides methods for the preparation of a starch copolymer product which is the reaction product of starch and one or more synthetic monomers capable of undergoing free radical polymerization wherein the reaction product is in the form of an emulsion or dispersion having weight-average particle sizes less than 180 nm as measured by Capillary Hydrodynamic Fractionation. The method includes the steps of: (a) dissolving or colloidally dispersing starch in an aqueous solvent to form a starch solution or dispersion; (b) heating the starch solution or dispersion to a specified temperature range; (c) adding to the starch solution or dispersion a first portion of the synthetic monomer and a free radical initiator for initiation of polymerization of the starch member and the synthetic monomer; and (d) after free radical polymerization of the synthetic monomers has been initiated in the presence of the starch, adding additional portions of synthetic monomers capable of undergoing free radical polymerization to the starch solution or dispersion. The invention also provides improved methods for the preparation of starch copolymer products utilizing wet adhesion monomers and improved industrial and architectural coatings containing the resulting starch copolymer products.