Patent US2898341A successfully refreshed from Google Patents.
US2898341A
Expired / Lapsed
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Organic phosphoric and thiophosphoric acid esters
Assignee: C.H. Boehringer Sohn AG and Co KG
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Filing: 1957-11-22
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Granted: 1959-08-04
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Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Sehring Richard
- 👤 Zeile Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/173; C07F9/08; C07F9/09; C07F9/091; C07F9/113; C07F9/1651; C07F9/547; C07F9/553; C07F9/576; C07F9/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
COMPOUNDS HAVING THE GENERAL STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
COMPOUNDS HAVING THE GENERAL STRUCTURAL FORMULA
References Cited (Backward Citations)
US2791599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |