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US2831881A
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Amine salts of trihalomethanephos-phonic and trihalomethanephos-phinic acids
Assignee: Shell Development Co
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Filing: 1955-09-23
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Granted: 1958-04-22
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Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Edward R Bell
- 👤 Roy E Thorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:58
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/40; C07F9/4003; C07F9/4006; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/02; C10M2223/00; C10M2223/06; C10M2223/061; C10M2223/063; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AMINE SALT HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
AN AMINE SALT HAVING THE FORMULA
References Cited (Backward Citations)
US2573568A
Cited
US2559754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |