US2542984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of solubilizing keratin
Assignee: Individual
•
Filing: 1949-02-25
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Granted: 1951-02-27
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Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Charles H Binkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:48
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; A; A23; A23J; A23J1/00; A23J1/10; A23K; A23K10/00; A23K10/20; A23K10/26; C08H; C08H1/00; C08H1/06; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS OF PREPARING A HIGH MOLECULAR WEIGHT, SOLUBILIZED KERATIN DERIVATIVE HAVING THE PROPERTY OF FORMING A FEL WHEN A HOT AQUEOUSALCOHOL SOLUTION THEREOF IS COOLED, COMPRISING HEATING A REACTION MIXTURE CONTAINING A KERATINCONTAINING MATERIAL, A NEUTRAL, NORMALLY-LIQUID, WATER-SOLUBLE ALCOHOL CONSISTING OF CARBON, HYDROGEN, AND OXYGEN, WATER, AND AND ACID AT A TEMPERATURE OF ABOUT FROM 100* TO 150* C., SAID ALCOHOL AND WATER BEING PRESENT IN THE PROPORTION OF ABOUT FROM 0.25 TO 3.0 VOLUMERS OF ALCOHOL PER VOLUME OF WATER AND SAID ACID BEING PRESENT IN SUFFICIENT QUANTITY TO GIVE A FINAL PH OF ABOUT FROM 2.5 TO 4.0 AT THE CONCLUSION OF THE REACTION, THEREBY TO PRODUCE SAID KERATIN DERIVATIVE.
Claim 2
Dependent Claim
113 words
A PROCESS OF PREPARING A HIGH MOLECULAR WEIGHT, SOLUBILIZED KERATIN DERIVATIVE HAVING THE PROPERTY OF FORMING A FEL WHEN A HOT AQUEOUSALCOHOL SOLUTION THEREOF IS COOLED, COMPRISING HEATING A REACTION MIXTURE CONTAINING A KERATINCONTAINING MATERIAL, A NEUTRAL, NORMALLY-LIQUID, WATER-SOLUBLE ALCOHOL CONSISTING OF CARBON, HYDROGEN, AND OXYGEN, WATER, AND AND ACID AT A TEMPERATURE OF ABOUT FROM 100* TO 150* C., SAID ALCOHOL AND WATER BEING PRESENT IN THE PROPORTION OF ABOUT FROM 0.25 TO 3.0 VOLUMERS OF ALCOHOL PER VOLUME OF WATER AND SAID ACID BEING PRESENT IN SUFFICIENT QUANTITY TO GIVE A FINAL PH OF ABOUT FROM 2.5 TO 4.0 AT THE CONCLUSION OF THE REACTION, THEREBY TO PRODUCE SAID KERATIN DERIVATIVE.
References Cited (Backward Citations)
US1846356A
Cited
US2434688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |