US3220989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear phosphonated polystyrene polymer
Assignee: Standard Oil Co
•
Filing: 1962-07-24
•
Granted: 1965-11-30
•
Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Robert J Rolih
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:44
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/40; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A NUCLEAR PHOSPHONATED HYDROCARBON COPOLYMER, BEING SUBSTANTIALLY FREE OF ALIPHATIC UNSATURATION, OF STYRENE AND A POLYMERIZABLE C2-12 ALKENE MONOMER, SAID COPOLYMER CONTAINING NUCLEAR PHOSPHONATED PHENYL GROUPS REPRSENTED BY THE FORMULA
Claim 2
Dependent Claim
30 words
A NUCLEAR PHOSPHONATED HYDROCARBON COPOLYMER, BEING SUBSTANTIALLY FREE OF ALIPHATIC UNSATURATION, OF STYRENE AND A POLYMERIZABLE C2-12 ALKENE MONOMER, SAID COPOLYMER CONTAINING NUCLEAR PHOSPHONATED PHENYL GROUPS REPRSENTED BY THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |