Laurie M Howe

US Patent:

20130210307, Aug 15, 2013

Filed:

Mar 22, 2011

Appl. No.:

13/635913

Inventors:

Joachim C. Ritter - Wilmington DE, US
Joel M. Pollino - Alpharetta GA, US
Michael T. Pottiger - Media PA, US
Yefim Brun - Wilmington DE, US
Lakshmi Krishnamurthy - Wilmington IN, US
John C. Howe - Bear DE, US
Laurie A. Howe - Bear DE, US
Harry Vaughn Samuelson - Chadds Ford PA, US
Zuohong Yin - West Chester PA, US

International Classification:

C08K 5/098

US Classification:

442327, 524299

Abstract:

Provided are novel compositions comprising a polyarylene sulfide and at least one tin additive comprising a branched tin(II) carboxylate selected from the group consisting of Sn(OCR), Sn(OCR)(OCR′), Sn(OCR)(OCR″), and mixtures thereof, where the carboxylate moieties OCR and OCR′ independently represent branched carboxylate anions and the carboxylate moiety OCR″ represents a linear carboxylate anion. Articles comprising the novel compositions are also provided. In addition, methods to improve the thermal stability of polyarylene sulfides, and methods to improve the thermo-oxidative stability of polyarylene sulfides, through the use of the disclosed branched tin(II) carboxylates are provided. The polyarylene sulfide compositions are useful in various applications which require superior thermal resistance, chemical resistance, and electrical insulating properties.

US Patent:

20220195399, Jun 23, 2022

Filed:

Nov 17, 2021

Appl. No.:

17/528564

Inventors:

- Palo Alto CA, US
Slavko Kralj - Copenhagen K, DK
Natnael Behabtu - Wilmington DE, US
Zhenghong Zhang - Shanghai, CN
Laurie A. Howe - Bear DE, US

International Classification:

C12N 9/10
C08B 37/00
C12P 19/04

Abstract:

Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.

US Patent:

20210207184, Jul 8, 2021

Filed:

Oct 19, 2020

Appl. No.:

17/073439

Inventors:

- Rochester NY, US
SLAVKO KRALJ - COPENHAGEN, DK
ZHENGHONG ZHANG - SHANGHAI, CN
LAURIE A. HOWE - BEAR DE, US

International Classification:

C12P 19/08
C12N 9/10
C12P 19/04
C12P 19/18

Abstract:

Reaction compositions are disclosed herein comprising at least water, beta-glucose--phosphate (beta-GP), an acceptor molecule, and an alpha--glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha- glycosidic linkages. Further disclosed are alpha--glucan phosphorylase enzymes and methods of use thereof.

US Patent:

20190322990, Oct 24, 2019

Filed:

Apr 15, 2019

Appl. No.:

16/383820

Inventors:

- Palo Alto CA, US
SLAVKO KRALJ - COPENHAGEN K, DK
NATNAEL BEHABTU - WILMINGTON DE, US
ZHENGHONG ZHANG - SHANGHAI, CN
LAURIE A HOWE - BEAR DE, US

International Classification:

C12N 9/10
C12P 19/04
C08B 37/00

Abstract:

Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.

US Patent:

20190264247, Aug 29, 2019

Filed:

Feb 21, 2019

Appl. No.:

16/281225

Inventors:

- Palo Alto CA, US
Slavko Kralj - Copenhagen, DK
Zhenghong Zhang - Shanghai, CN
Laurie A. Howe - Bear DE, US

International Classification:

C12P 19/08
C12N 9/10

Abstract:

Reaction compositions are disclosed herein comprising at least water, beta-glucose-1-phosphate (beta-G1P), an acceptor molecule, and an alpha-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha-1,3 glycosidic linkages. Further disclosed are alpha-1,3-glucan phosphorylase enzymes and methods of use thereof.

US Patent:

20190185893, Jun 20, 2019

Filed:

Dec 13, 2018

Appl. No.:

16/218518

Inventors:

- Wilmington DE, US
JAMES JOSHUA OHANE - WEST CHESTER PA, US
NIKITA ILTCHENKO - WILMINGTON DE, US
YEFIM BRUN - WILMINGTON DE, US
BRIAN MCCAULEY - WAYNE PA, US
LAURIE A. HOWE - BEAR DE, US
YOUGEN LI - PENNINGTON NJ, US

International Classification:

C12P 19/08
C12P 19/18
C08B 37/02
C08B 37/00
C08J 5/18
C11D 3/37

Abstract:

Compositions are disclosed herein comprising a graft copolymer that comprises: (i) a backbone comprising dextran that has been modified with about 1%-25% alpha-1,2 branches, and (ii) one or more alpha-1,3-glucan side chains comprising at least about 50% alpha-1,3 glycosidic linkages. Further disclosed are reactions for producing such graft copolymers, as well as their use in derivatives, films and various other applications.