US2575551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extracting gelatin and glue
Assignee: Individual
•
Filing: 1948-06-07
•
Granted: 1951-11-20
•
Expires: 1968-06-07
Abstract
No abstract record available.
Inventors
- 👤 Rene E A J Frechin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:16
CPC Classifications
C; C09; C09H; C09H3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN THE PRODUCTION OF GELATIN PRODUCTS, THE STEPS OF CONTINUOUSLY PASSING SKIN SHREDS COUNTERCURRENTLY WITH A HOT AQUEOUS AGENT ADAPTED TO HYDROLYZE THE COLLAGEN IN SAID SHREDS TO GELATIN AND TO EXTRACT THE GELATIN SO FORMED THROUGH AN ELONGATED EXTRACTION ZONE; MAINTAINING A GRADIENT OF RISING PRESSURE IN SAID ZONE FROM AN END THEREOF TO AN INTERMEDIATE PORTION OF THE SAME AND A GRADIENT OF FALLING PRESSURE FROM SAID INTERMEDIATE PORTION TO THE OTHER END OF SAID ZONE; CONTINUOUSLY SUPPLYING HEAT TO SAID ZONE; CONTINUOUSLY WITHDRAWING A PORTION OF SAID EXTRACTING AGENT FROM SAID ZONE AT A POINT BETWEEN THE POINT OF INGRESS AND SAID AGENT INTO SAID INTERMEDIATE PORTION OF SAID ZONE AND THE SHRED EXIT END OF SAID ZONE AND WITHDRAWING THE REMAINDER OF SAID EXTRACTING AGENT FROM SAID SHREDS ENTRANCE END OF SAID ZONE.
Claim 2
Dependent Claim
137 words
IN THE PRODUCTION OF GELATIN PRODUCTS, THE STEPS OF CONTINUOUSLY PASSING SKIN SHREDS COUNTERCURRENTLY WITH A HOT AQUEOUS AGENT ADAPTED TO HYDROLYZE THE COLLAGEN IN SAID SHREDS TO GELATIN AND TO EXTRACT THE GELATIN SO FORMED THROUGH AN ELONGATED EXTRACTION ZONE; MAINTAINING A GRADIENT OF RISING PRESSURE IN SAID ZONE FROM AN END THEREOF TO AN INTERMEDIATE PORTION OF THE SAME AND A GRADIENT OF FALLING PRESSURE FROM SAID INTERMEDIATE PORTION TO THE OTHER END OF SAID ZONE; CONTINUOUSLY SUPPLYING HEAT TO SAID ZONE; CONTINUOUSLY WITHDRAWING A PORTION OF SAID EXTRACTING AGENT FROM SAID ZONE AT A POINT BETWEEN THE POINT OF INGRESS AND SAID AGENT INTO SAID INTERMEDIATE PORTION OF SAID ZONE AND THE SHRED EXIT END OF SAID ZONE AND WITHDRAWING THE REMAINDER OF SAID EXTRACTING AGENT FROM SAID SHREDS ENTRANCE END OF SAID ZONE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |