Patent US2811423A successfully refreshed from Google Patents.
Patent US3265719A successfully refreshed from Google Patents.
US3265719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Betaines
Assignee: Wyeth Holdings LLC
•
Filing: 1964-09-01
•
Granted: 1966-08-09
•
Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 Frank M Cowen
- 👤 Bellis Gloria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
BETAINES HAVING THE FORMULA
Claim 2
Dependent Claim
4 words
BETAINES HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |