US3329706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-hydroxy-3-alkenoyloxypropyltrialkylammonium halides
Assignee: Shell USA Inc
•
Filing: 1964-03-23
•
Granted: 1967-07-04
•
Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Sobolev Igor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
THE ESTER OF THE FORMULA
Claim 2
Dependent Claim
5 words
THE ESTER OF THE FORMULA
References Cited (Backward Citations)
US3075999A
Cited
US2484487A
Cited
US2630427A
Cited
US3008851A
Cited
US2824861A
Cited
US3059024A
Cited
US3272712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |