Paul L Austin

US Patent:

43201504, Mar 16, 1982

Filed:

Dec 12, 1980

Appl. No.:

6/216027

Inventors:

Paul R. Austin - Wilmington DE
John P. Zikakis - Townsend DE
Charles J. Brine - Skillman NJ

Assignee:

University of Delaware - Newark DE

International Classification:

A23C 2108
A23K 108
A23K 118

US Classification:

426 2

Abstract:

Formulated animal feeds having excellent digestibility with high energy and good protein content based on lactose-rich whey products are produced by supplementation with small quantities of water insoluble poly-N-acetyl-. beta. -D-glucosamine glycosides having a molecular weight of at least 5,000 and are fed to farm type animals. Most of the formulated feeds contain at least 7% lactose and up to 5% poly-N-acetyl-. beta. -D-glucosamine glycoside in addition to the usual protein, fat, carbohydrate, vitamin and mineral constitutents of the feed. For poultry, which are among the least efficient metabolizers of lactose, such feeds may contain 5-25% lactose.

US Patent:

40297276, Jun 14, 1977

Filed:

Apr 16, 1975

Appl. No.:

5/568434

Inventors:

Paul Roland Austin - Wilmington DE
Charles James Brine - Newark DE

Assignee:

The University of Delaware - Newark DE

International Classification:

C08B 3708

US Classification:

264186

Abstract:

A new method for producing high-strength films, fibers and other shaped articles from chitin has been discovered, whereby an anhydrous solution of chitin is made into the desired shape, the chitin is insolubilized with an organic non-solvent for the chitin and the resultant shaped article, if desired, is oriented, by cold drawing until its properties, such as tensile strength, are substantially enhanced. The films, fibers, and other shaped articles capable of being oriented or in oriented form, are novel and useful in such applications as food wrap and surgical sutures.

US Patent:

45741506, Mar 4, 1986

Filed:

Feb 19, 1985

Appl. No.:

6/703070

Inventors:

Paul R. Austin - Wilmington DE

Assignee:

University of Delaware - Newark DE

International Classification:

C08B 3708

US Classification:

536 20

Abstract:

A process for preparing dry, free-flowing chitosan-carboxylic acid complexes is taught wherein chitosan, containing free amino groups is dispersed in selected liquids and contacted with selected carboxylic acids. The complexes are recovered by filtration, decantation or centrifugation.

US Patent:

39878023, Oct 26, 1976

Filed:

Mar 5, 1975

Appl. No.:

5/555546

Inventors:

Paul Rolland Austin - Wilmington DE

Assignee:

The University of Delaware - Newark DE

International Classification:

A24B 1500
A24B 1502

US Classification:

131 17R

Abstract:

Chitin, either as such or in toasted form, has been found to be an effective extender and filter for tobacco. It can be used in substantial amounts with tobacco blends without adversely affecting such physical properties as packing ability, burning rate or retention of ash. Organoleptic properties such as aroma, taste and smoothness are little affected. To the degree that chitin is used in the mixture, nicotine and noxious tars are reduced. Mixtures of chitin and tobacco represent new compositions.

US Patent:

41654331, Aug 21, 1979

Filed:

Sep 20, 1977

Appl. No.:

5/834938

Inventors:

Paul R. Austin - Wilmington DE

Assignee:

University of Delaware - Newark DE

International Classification:

C09J 304

US Classification:

536 20

Abstract:

Method for converting dextro rotatory chitin to levo rotatory chitin comprising dissolving chitin in a composition containing dimethyl acetamide, N-methyl-pyrrolidone or mixture thereof and lithium chloride.

US Patent:

41525132, May 1, 1979

Filed:

Jun 1, 1977

Appl. No.:

5/802424

Inventors:

Paul R. Austin - Wilmington DE
George A. Reed - Newark DE

Assignee:

University of Delaware - Newark DE

International Classification:

C07H 1502
C07H 506

US Classification:

536 4

Abstract:

A method for controlling the anomer ratio in alkyl glycosides of amino sugars produced by heating an N-acylamino sugar with an alcohol in the presence of an acidic catalyst comprising the continuous removal of byproduct water from the reaction zone.

US Patent:

43095348, Jan 5, 1982

Filed:

Feb 15, 1979

Appl. No.:

6/012505

Inventors:

Paul R. Austin - Wilmington DE

Assignee:

University of Delaware - Newark DE

International Classification:

C08B 3708
C08L 508

US Classification:

536 20

Abstract:

Renatured chitosan having an optical rotation in solution that is at least 20% more negative than that of untreated chitosan and the process of making same. The process for preparing such renatured chitosan is accomplished by aging a solution of chitosan in an aqueous acid at a pH of about 2. 0 to 5. 5. It is preferred to age the solution at room temperature for about 2 to 14 days until the optical activity shifts toward the negative by at least about 20%.

US Patent:

40594572, Nov 22, 1977

Filed:

Sep 30, 1976

Appl. No.:

5/728257

Inventors:

Paul Rolland Austin - Wilmington DE

Assignee:

The University of Delaware - Newark DE

International Classification:

C09J 304

US Classification:

106203

Abstract:

Solutions of chitin in dimethylacetamide, N-methylpyrrolidone or mixtures of these in combination with a minor proportion of lithium chloride.