Patent US3970614A successfully refreshed from Google Patents.
US3970614A
Expired / Lapsed
US
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Nutrient protein from keratinaceous material solubilized with N,N,-dimethylformamide
Assignee: Athlon Corp
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Filing: 1974-12-13
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Granted: 1976-07-20
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Expires: 1994-12-13
Abstract
Abstract Keratinaceous materials, such as poultry feathers, fur, hair, and hoofs, are solubilized by treatment with N,N-dimethylformamide or an aqueous solution thereof to yield a nutrient protein composition which is suitable for use as a food or food supplement for animals and humans and as a food material in food products.
Inventors
- 👤 William D. Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:11
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/10; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A protein composition comprising avian keratinaceous material solubilized by refluxing or boiling with N,N-dimethylformamide at boiling temperature and from which a composition consisting essentially of protein is recovered.
Claim 2
Dependent Claim
28 words
A protein composition comprising avian keratinaceous material solubilized by refluxing or boiling with N,N-dimethylformamide at boiling temperature and from which a composition consisting essentially of protein is recovered.
Claim 3
Dependent Claim
16 words
A protein composition as claimed in claim 1 and in the form of a dry powder.
Claim 4
Dependent Claim
16 words
A protein composition as claimed in claim 1 and in the form of a wet paste.
Claim 5
Dependent Claim
16 words
A protein composition as claimed in claim 1 wherein the composition is derived from chicken feathers.
Claim 6
Dependent Claim
15 words
A protein composition as claimed in claim 1 wherein the composition is a keratin protein.
Claim 7
Dependent Claim
30 words
A food material including as a nutritional ingredient a protein composition comprising avian keratinaceous material solubilized by refluxing or boiling with N,N-dimethylformamide and forming a composition consisting essentially of protein.
Claim 8
Dependent Claim
30 words
A food material including as a nutritional ingredient a protein composition comprising avian keratinaceous material solubilized by refluxing or boiling with N,N-dimethylformamide and forming a composition consisting essentially of protein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |