Patent US3877319A successfully refreshed from Google Patents.
Patent US3479392A successfully refreshed from Google Patents.
US3479392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated ethers and esters
Assignee: WR Grace and Co
•
Filing: 1960-12-23
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Granted: 1969-11-18
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Eric W Stern
- 👤 Marshall L Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:49
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/267; C07C; C07C209/00; C07C209/02; C07C41/00; C07C41/01; C07C67/00; C07C67/04; C07C67/05; C07C67/055; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PROCESS WHICH COMPRISES REACTING AN UNSATURATED COMPOUND HAVING AT LEAST ONE ALIPHATIC
Claim 2
Dependent Claim
57 words
A PROCESS WHICH COMPRISES REACTING A HYDROCARBON OLEFIN HAVING UP TO 22 CARBN ATOMS WITH AN ALCOHOL HAVING THE FORMULA R-OH IN WHICH R IS A HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 20 CARBON ATOMS UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF A PALLADIUM HALIDE AND DISODIUM HYDROGEN PHOSPHATE TO PRODUCE AN ETHYLENICALLY UNSATURATED ETHER.
References Cited (Backward Citations)
US1951747A
Cited
US2198046A
Cited
US2428590A
Cited
US2467373A
Cited
US2739169A
Cited
SU137511A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |