Patent US3131207A successfully refreshed from Google Patents.
US3131207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of phosphonitrilic acidorthophosphoric acid anhydride and process for preparing them
Assignee: Olin Corp
•
Filing: 1962-01-25
•
Granted: 1964-04-28
•
Expires: 1982-01-25
Abstract
No abstract record available.
Inventors
- 👤 Rudi F W Ratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:23
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A CYCLIC COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A CYCLIC COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
10 words
THE PROCESS FOR PREPARING A CYCLIC COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
10 words
THE PROCESS FOR PREPARING A CYCLIC COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2876247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |