Patent US2637704A successfully refreshed from Google Patents.
US2637704A
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Condensation product of polymeric phosphonitrilic chloride, chloroaniline, and a polyamino compound
Assignee: Monsanto Chemicals Ltd
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Filing: 1949-07-29
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Granted: 1953-05-05
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Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Forrest R Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
CELLULOSIC MATERIAL CONTAINING A CONDENSATION PRODUCT OF (PNCL2)N, WHERE N IS AN INTEGER HAVING A VALUE OF FROM 3 TO 12, AN UNSUBSTITUTED CHLOROANILINE AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA, GUANYLUREA, GUANIDINE, GUANIDINE CARBONATE AND AMINOGUANIDINE BICARBONATE.
References Cited (Backward Citations)
US2374646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |