US3855186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus-containing polymers
Assignee: Monsanto Co
•
Filing: 1972-07-17
•
Granted: 1974-12-17
•
Expires: 1992-07-17
Abstract
Abstract Phospholene oxide polymer and process for preparation. The polymers are useful as flame retardants.
Inventors
- 👤 K Moedritzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:58
CPC Classifications
C; C08; C08F; C08F134/00; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6568; C07F9/65685; C08L; C08L101/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
9 words
A PHOSPHOLENE OXIDE HOMOPOLYMER CHARACTERIZED BY THE REPEATING UNITS
Claim 2
Dependent Claim
9 words
A PHOSPHOLENE OXIDE HOMOPOLYMER CHARACTERIZED BY THE REPEATING UNITS
Claim 3
Dependent Claim
9 words
A phospholene oxide homopolymer characterized by the repeating units
Claim 4
Dependent Claim
9 words
A phospholene oxide homopolymer characterized by the repeating units
Claim 5
Dependent Claim
9 words
A phospholene oxide homopolymer characterized by the repeating units
Claim 6
Dependent Claim
9 words
A phospholene oxide homopolymer characterized by the repeating units
Claim 7
Dependent Claim
13 words
Process for the preparation of phospholene oxide homopolymer, characterized by the repeating unit,
Claim 8
Dependent Claim
13 words
Process for the preparation of phospholene oxide homopolymer, characterized by the repeating unit,
References Cited (Backward Citations)
US3160593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |