US2680132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making neutral esters of selenophosphoric acid
Assignee: Bayer AG
•
Filing: 1950-08-15
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Granted: 1954-06-01
•
Expires: 1970-08-15
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
- 👤 Lorenz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:32
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; A; A01; A01N; A01N57/00; A01N57/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR PRODUCING SELENOPHOSPHORIC ESTERS OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
10 words
A PROCESS FOR PRODUCING SELENOPHOSPHORIC ESTERS OF THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |