Patent US3548038A successfully refreshed from Google Patents.
US3548038A
Expired / Lapsed
US
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2-bis(diesters of phosphonomethyl)amino 1,3-dihydroxy propanes
Assignee: Stauffer Chemical Co
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Filing: 1967-10-20
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Granted: 1970-12-15
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Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:31
CPC Classifications
C; C07; C07D; C07D498/00; C07D498/02; C07D498/04; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/4009; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3889
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3257479A
Cited
US3297796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |