Patent US2580931A successfully refreshed from Google Patents.
US2580931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sebacic acid
Assignee: EIDP Inc
•
Filing: 1950-07-22
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Granted: 1952-01-01
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Expires: 1970-07-22
Abstract
No abstract record available.
Inventors
- 👤 Lane Frank Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:00
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR THE PRODUCTION OF SEBACIC ACID WHICH COMPRISES PYROLYZING A SUBSTANTIALLY NONFLUID, SAPONIFIED SOLID MIXTURE OF AN ALKALI AND A RICINOLEATE-CONTAINING COMPOUND BY DIRECTLY CONTACTING SAID SOLID MIXTURE WITH STEAM OF SUBSTANTIALLY ATMOSPHERIC PRESSURE AND RECOVERING SEBACIC ACID FROM THE PYROLYSIS PRODUCT.
Claim 2
Dependent Claim
44 words
A PROCESS FOR THE PRODUCTION OF SEBACIC ACID WHICH COMPRISES PYROLYZING A SUBSTANTIALLY NONFLUID, SAPONIFIED SOLID MIXTURE OF AN ALKALI AND A RICINOLEATE-CONTAINING COMPOUND BY DIRECTLY CONTACTING SAID SOLID MIXTURE WITH STEAM OF SUBSTANTIALLY ATMOSPHERIC PRESSURE AND RECOVERING SEBACIC ACID FROM THE PYROLYSIS PRODUCT.
References Cited (Backward Citations)
US2133008A
Cited
US2182056A
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US2304602A
Cited
US2217515A
Cited
US2217516A
Cited
US2318762A
Cited
US2470849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |