Patent US5773754A successfully refreshed from Google Patents.
US2810733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peracid epoxidation of fatty acid esters
Assignee: FMC Corp
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Filing: 1954-03-23
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Granted: 1957-10-22
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Frank P Greenspan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:32
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; C07D303/40; C07D303/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF EPOXIDIZING UNSATURATED FATTY ACID ESTER CONTAINED IN NATURALLY OCCURING UNSATURATED OILS WHICH COMPRISES HEATING SAID OILS UNDER EPOXIDIZING CONDITIONS WITH A LOWER ALIPHATIC PERACID, THE AMOUNT OF WHICH CORRESPONDS TO 1 TO 1.3 MOLES OF PERACID FOR ACID DOUBLE BOND IN EACH MOLE OF MONO-UNSATURATED ESTERIFIED ACID PLUS 1 TO 1.3 MOLES OF LOWER ALIPHATIC PERACID FOR ONE DOUBLE HOND ONLY OF EACH MOLE OF POLY-UNSATURATED ESTERIFIED ACID.
Claim 2
Independent Claim
71 words
THE METHOD OF EPOXIDIZING UNSATURATED FATTY ACID ESTER CONTAINED IN NATURALLY OCCURING UNSATURATED OILS WHICH COMPRISES HEATING SAID OILS UNDER EPOXIDIZING CONDITIONS WITH A LOWER ALIPHATIC PERACID, THE AMOUNT OF WHICH CORRESPONDS TO 1 TO 1.3 MOLES OF PERACID FOR ACID DOUBLE BOND IN EACH MOLE OF MONO-UNSATURATED ESTERIFIED ACID PLUS 1 TO 1.3 MOLES OF LOWER ALIPHATIC PERACID FOR ONE DOUBLE HOND ONLY OF EACH MOLE OF POLY-UNSATURATED ESTERIFIED ACID.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |