US3225074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Betaines
Assignee: Wyeth Holdings LLC
•
Filing: 1959-12-28
•
Granted: 1965-12-21
•
Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Frank M Cowen
- 👤 Bellis Gloria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:40
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/07
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)
US2504427A
Cited
US2781385A
Cited
US2777872A
Cited
US2875219A
Cited
US2935493A
Cited
US2924552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |