US2852548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of salts of aryloxyalkanol-sulfuric acid semiesters
Assignee: Henkel AG and Co KGaA
•
Filing: 1955-06-09
•
Granted: 1958-09-16
•
Expires: 1975-06-09
Abstract
No abstract record available.
Inventors
- 👤 Gundel Wolfgang
- 👤 Linden Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:32
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE METHOD OF PRODUCING SALTS OF ARYLOXYALKANOLSULFURIC ACID SEMI-ESTERS HAVING THE GENERAL STRUCTURAL FORMULA
Claim 2
Independent Claim
14 words
THE METHOD OF PRODUCING SALTS OF ARYLOXYALKANOLSULFURIC ACID SEMI-ESTERS HAVING THE GENERAL STRUCTURAL FORMULA
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |