US2591133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing gelatin derivative
Assignee: California Institute Research Foundation
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Filing: 1950-05-29
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Granted: 1952-04-01
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Expires: 1970-05-29
Abstract
No abstract record available.
Inventors
- 👤 Dan H Campbell
- 👤 Joseph B Koepfli
- 👤 Pauling Linus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF MANUFACTURING A GELATIN PRODUCT, WHICH COMPRISES CONDENSING A GELATIN SOLUTION IN WATER BY THE ADDITION OF A CONDENSATION AGENT SELECTED FROM THE GROUP CONSISTING OF CARBON SUBOXIDE, FORMALDEHYDE, ACETALDEHYDE, QUINONE AND GLYOXAL TERMINATING THE CONDENSATION BEFORE AN IRREVERSIBLE GEL HAS FORMED, OXIDIZING THE CONDENSED GELATIN BY THE ADDITION OF HYDROGEN PEROXIDE, ADDING SALT TO A CONCENTRATION OF APPROXIMATELY 0.9% AND ADJUSTING THE PH TO APPROXIMATELY 7.
Claim 2
Independent Claim
69 words
A METHOD OF MANUFACTURING A GELATIN PRODUCT, WHICH COMPRISES CONDENSING A GELATIN SOLUTION IN WATER BY THE ADDITION OF A CONDENSATION AGENT SELECTED FROM THE GROUP CONSISTING OF CARBON SUBOXIDE, FORMALDEHYDE, ACETALDEHYDE, QUINONE AND GLYOXAL TERMINATING THE CONDENSATION BEFORE AN IRREVERSIBLE GEL HAS FORMED, OXIDIZING THE CONDENSED GELATIN BY THE ADDITION OF HYDROGEN PEROXIDE, ADDING SALT TO A CONCENTRATION OF APPROXIMATELY 0.9% AND ADJUSTING THE PH TO APPROXIMATELY 7.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |