US2858332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine salts of monohaloalkylphosphonic acids
Assignee: Shell Development Co
•
Filing: 1956-08-17
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Granted: 1958-10-28
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Expires: 1976-08-17
Abstract
No abstract record available.
Inventors
- 👤 Forrest J Watson
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:35
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A SALT OF A HIGH-MOLECULAR WEIGHT HIGHLY-BRANCHED ALIPHATIC PRIMARY AMINE CONTAINING FROM 8 TO 499 CARBON ATOMS AND A DIBASIC ALPHA-MONOCHLOROALKYLPHOSPHONIC ACID IN WHICH THE CHLOROALKYL GROUP CONTAINS UP TO FOUR CARBON ATOMS
Claim 2
Dependent Claim
33 words
A SALT OF A HIGH-MOLECULAR WEIGHT HIGHLY-BRANCHED ALIPHATIC PRIMARY AMINE CONTAINING FROM 8 TO 499 CARBON ATOMS AND A DIBASIC ALPHA-MONOCHLOROALKYLPHOSPHONIC ACID IN WHICH THE CHLOROALKYL GROUP CONTAINS UP TO FOUR CARBON ATOMS
References Cited (Backward Citations)
GB705308A
Cited
US2674616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |