US3898129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatically hydrolyzed composition of skin rag and derivatives thereof
Assignee: KH Neochem Co Ltd
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Filing: 1972-10-13
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Granted: 1975-08-05
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Expires: 1992-10-13
Abstract
Abstract A process comprising (a) enzymatically hydrolyzing skin rag with a neutral or alkaline protease which is capable of decomposing collagen other than collagenase, and (b) N-acylating the resultant oligopeptide hydrolyzation products with a fatty acid type acylating agent having from 8-22 carbon atoms to form Nacylated oligopeptides useful as surfactants.
Inventors
- 👤 Yasu Fujimoto
- 👤 Masayuki Teranishi
- 👤 Ikuo Matsukuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K35/00; A61K35/12; A61K35/36; A61K38/00; A61K38/01; A61K38/012; A61K38/014; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/65; C; C07; C07K; C07K1/00; C07K1/02; C11; C11D; C11D1/00; C11D1/02; C11D1/32; A61Q5/00; A61Q5/02; A61Q9/00; A61Q9/02; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842; Y10S530/859
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A PROCESS FOR PREPARING A SKIN RAG HYDROLYSATE CONTAINING MAINLY PEPTIDES HAVING A POLYMERIZATION DEGREE OF FROM ABOUT 4 TO ABOUT 7 COMPRISING TREATING SKIN RAG WITH AN ALKALINE PROTEASE OTHER THAN COLLAGENASE WHICH PROTEASE IS CAPABLE OF DECOMPOSING COLLAGEN AT A PH OF FROM ABOUT 7 TO 12 AND AT A TEMPERATURE OF FROM ABOUT 47* TO 70*C FOR A PERIOD OF FROM ABOUT 4 TO 24 HOURS HOURS THE AMOUNT OF SAID PROTEASE BEING FROM ABOUT 0.1 TO 0.5% BASED O THE WEIGHT OF SAID SKIN RAG..
Claim 2
Dependent Claim
89 words
A PROCESS FOR PREPARING A SKIN RAG HYDROLYSATE CONTAINING MAINLY PEPTIDES HAVING A POLYMERIZATION DEGREE OF FROM ABOUT 4 TO ABOUT 7 COMPRISING TREATING SKIN RAG WITH AN ALKALINE PROTEASE OTHER THAN COLLAGENASE WHICH PROTEASE IS CAPABLE OF DECOMPOSING COLLAGEN AT A PH OF FROM ABOUT 7 TO 12 AND AT A TEMPERATURE OF FROM ABOUT 47* TO 70*C FOR A PERIOD OF FROM ABOUT 4 TO 24 HOURS HOURS THE AMOUNT OF SAID PROTEASE BEING FROM ABOUT 0.1 TO 0.5% BASED O THE WEIGHT OF SAID SKIN RAG..
Claim 3
Dependent Claim
21 words
The process of claim 1, wherein the protein element of the skin rag is denatured prior to treatment with the protease.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |