US2953595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary phosphinic acids
Assignee: Wyeth Holdings LLC
•
Filing: 1958-10-20
•
Granted: 1960-09-20
•
Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Michael M Rauhut
- 👤 Helen A Currier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:42
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/285; B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/60; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND REPRESENTED BY 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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |