US3086054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis (dialkylphosphino) acetylenes and 1:2-bis (dialkylphosphino) ethylenes
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1959-03-06
•
Granted: 1963-04-16
•
Expires: 1979-03-06
Abstract
No abstract record available.
Inventors
- 👤 Chatt Joseph
- 👤 Hart Frank Alan
- 👤 Fielding Harold Crosbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/386; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5027; C07F9/53; C07F9/5304; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF BIS (DIALKYLPHOSPHINO) ACETYLENES HAVING THE FOMULA
Claim 2
Dependent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF BIS (DIALKYLPHOSPHINO) ACETYLENES HAVING THE FOMULA
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |