US2979523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition products of dialkyl acid orthophosphate and olefin oxides
Assignee: Gulf Oil Corp
•
Filing: 1956-03-06
•
Granted: 1961-04-11
•
Expires: 1976-03-06
Abstract
No abstract record available.
Inventors
- 👤 Troy L Cantrell
- 👤 John G Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/2641; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C10L1/143; C10L1/2666; C10L1/2683; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A SUBSTANTIALLY NEUTRAL ADDITION PRODUCT OF (A) AND OLEFIN OXIDE THAT CONTAINS 2 TO 4 CARBON ATOMS, AND (B) A DIALKYL ACID ORTHOPHOSPHATE PREPARED BY ESTERIFYING PHOSPHORUS PENTOXIDE WITH A MONOHYDRIC ALCOHOL THAT CONTAINS 5 TO 8 CARBON ATOMS IN THE RESPECTIVE MOLE PROPORTION OF ABOUT 1:4.
Claim 2
Dependent Claim
47 words
A SUBSTANTIALLY NEUTRAL ADDITION PRODUCT OF (A) AND OLEFIN OXIDE THAT CONTAINS 2 TO 4 CARBON ATOMS, AND (B) A DIALKYL ACID ORTHOPHOSPHATE PREPARED BY ESTERIFYING PHOSPHORUS PENTOXIDE WITH A MONOHYDRIC ALCOHOL THAT CONTAINS 5 TO 8 CARBON ATOMS IN THE RESPECTIVE MOLE PROPORTION OF ABOUT 1:4.
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |