US3193397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphonitrilic flameproofing materials
Assignee: WR Grace and Co
•
Filing: 1962-01-22
•
Granted: 1965-07-06
•
Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robin W Stephens
- 👤 Grushkin Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C08; C08G; C08G79/00; C08G79/02; C08G79/025; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2762; Y10T442/277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A METHOD FOR RENDERING TEXTILE FIBERS FLAME RESISTANT WHICH COMPRISES APPLYING A PHENYLAMINOPHOSPHONITRILIC POLYMER HAVING THE FORMULA:
Claim 2
Independent Claim
17 words
A METHOD FOR RENDERING TEXTILE FIBERS FLAME RESISTANT WHICH COMPRISES APPLYING A PHENYLAMINOPHOSPHONITRILIC POLYMER HAVING THE FORMULA:
References Cited (Backward Citations)
US2637704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |