Patent US3188309A successfully refreshed from Google Patents.
US3188309A
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Process for preparing organo-phosphate esters
Assignee: Asahi Kasei Corp
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Filing: 1963-04-01
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Granted: 1965-06-08
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Mukaiyama Teruaki
- 👤 Hata Tsujiaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:45
CPC Classifications
C; C07; C07H; C07H11/00; C07H11/04; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/22; C07F9/24; C07H1/00; C07H1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
14 words
A PROCESS FOR A PHOSPHATE ESTER, WHICH COMPRISES REACTING A PHSOPHITE HAVING THE 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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |