US3845169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha,omega-bis-(o,o'-diorganophosphonylmethyl-o-organophosphinyl)-alkanes
Assignee: Monsanto Co
•
Filing: 1972-10-16
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Granted: 1974-10-29
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Expires: 1992-10-16
Abstract
Abstract 1. A,W-BIS-(O,O''-DIORGANOPHOSPHONYLMETHYL-O-ORGANOPHOSPHINYL)-ALKANES OF THE GENERAL FORMULA (R1-O)2-P(=O)-CH2-P(=O)(-O-R2)-(CH2)N-P(=O)(-O-R2)-CH2- P(=O)(-O-R1)2 IN WHICH R1 AND R2 SIGNIFY IDENTICAL OR DIFFERENT ALKYL GROUPS HAVING FROM 1 TO 4 CARBON ATOMS AND N IS AN INTEGER OF 4 TO 6.
Inventors
- 👤 L Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/3821
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A,W-BIS-(O,O''-DIORGANOPHOSPHONYLMETHYL-O-ORGANOPHOSPHINYL)-ALKANES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
A,W-BIS-(O,O''-DIORGANOPHOSPHONYLMETHYL-O-ORGANOPHOSPHINYL)-ALKANES OF THE GENERAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |