US2844558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkenyl beta-cyanoethanephosphonate and polymers and copolymers thereof
Assignee: Victor Chemical Works
•
Filing: 1953-09-22
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Granted: 1958-07-22
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Expires: 1973-09-22
Abstract
No abstract record available.
Inventors
- 👤 Toy Arthur Dock Fon
- 👤 Robert S Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COPOLYMER OF A DI BETA, GAMMA ALKENYL BETACYANOETHANEPHOSPHONATE HAVING THE FORMULA:
Claim 2
Dependent Claim
12 words
A COPOLYMER OF A DI BETA, GAMMA ALKENYL BETACYANOETHANEPHOSPHONATE HAVING THE FORMULA:
References Cited (Backward Citations)
US2668800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |