Patent US2565986A successfully refreshed from Google Patents.
US2565986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active agents
Assignee: Sharples Chemicals Inc
•
Filing: 1945-11-24
•
Granted: 1951-08-28
•
Expires: 1965-11-24
Abstract
No abstract record available.
Inventors
- 👤 John F Olin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:20
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/002; C07; C07C; C07C323/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
AS A NEW COMPOSITION OF MATTER, THE CONDENSATION PRODUCT OF A TERTIARY ALKYL MERCAPTAN IN WHICH THE TERTIARY ALKYL RADICAL CONTAINS 8 TO 24 CARBON ATOMS AND HAS A STRUCTURE CORRESPONDING TO THAT OF AN OLEFIN POLYMER WITH MORE THAN ONE MOLE OF ETHYLENE OXIDE PER MOLE OF SAID TERTIARY ALKYL MERCAPTAN, SAID CONDENSATION PRODUCT BEING A SULFUR-BEARING ALCOHOL WITH ETHER LINKAGES AND HAVING THE FORMULA:
References Cited (Backward Citations)
US2205021A
Cited
US2392103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |