Patent US3803271A successfully refreshed from Google Patents.
US3803271A
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Organophosphonates
Assignee: ISP Investments LLC
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Filing: 1971-06-01
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Granted: 1974-04-09
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Expires: 1991-06-01
Abstract
Abstract ORGANOPHOSPHONATE COMPOUNDS ARE PROVIDED REPRESENTED BY THE STRUCTURAL FORMULA: R1-P(=O)(-O-R)2 WHEREIN R1 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HALOALKYL, ALKENYL AND HALOALKENYL AND R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYYL, HALOALKYL AND HALOALKENYL, WITH THE PROVISO THAT WHEN R AND R1 AREHAOALKYL, THEY ARE DIFFERENT.
Inventors
- 👤 M Chiddix
- 👤 C Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:00
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/4015; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5337; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23F11/1676
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |