US2960528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of neutral phosphate esters
Assignee: Eastman Kodak Co
•
Filing: 1959-10-22
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Granted: 1960-11-15
•
Expires: 1979-10-22
Abstract
No abstract record available.
Inventors
- 👤 Richard L Mcconnell
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; C07F9/06; C07F9/08; C07F9/09; C07F9/16; C07F9/165; C07F9/657109; C07F9/657118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
THE METHOD FOR PRODUCTION NEUTRAL PHOSPHATE ESTERS WHICH COMPRISES REACTING AN ACID PHOSPHATE HAVING THE STRUCTURAL FORMULA:
Claim 2
Independent Claim
17 words
THE METHOD FOR PRODUCTION NEUTRAL PHOSPHATE ESTERS WHICH COMPRISES REACTING AN ACID PHOSPHATE HAVING THE STRUCTURAL 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) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |