US2799701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 2-naphthylphosphonic acid
Assignee: Wyeth Holdings LLC
•
Filing: 1954-11-03
•
Granted: 1957-07-16
•
Expires: 1974-11-03
Abstract
No abstract record available.
Inventors
- 👤 Karl C Whitehouse
- 👤 Hans Z Lecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:16
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/007; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND CORRESPOUNDING TO THE FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND CORRESPOUNDING TO THE FORMULA
References Cited (Backward Citations)
US2553417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |