US2900405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halomethanephosphonates
Assignee: Eastman Kodak Co
•
Filing: 1953-05-29
•
Granted: 1959-08-18
•
Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Marvin A Mccall
- 👤 Richard L Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:14
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4084; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
NEW COMPOUNDS OF THE SYMMETRICAL FORMULA:
Claim 2
Dependent Claim
6 words
NEW COMPOUNDS OF THE SYMMETRICAL FORMULA:
References Cited (Backward Citations)
US2682522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |