US2827475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyl-2-haloallylphosphonates and copolymers thereof
Assignee: Eastman Kodak Co
•
Filing: 1953-03-23
•
Granted: 1958-03-18
•
Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:02
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4015; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
THE COMPOUNDS HAVING THE FORMULA:
Claim 3
Dependent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND HAVING THE FORMULA:
Claim 4
Dependent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
US2486657A
Cited
US2425766A
Cited
US2516168A
Cited
US2600783A
Cited
US2636027A
Cited
US2605258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |