US2938831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of nematodes using dialkyl pyrazinyl phosphorothioates
Assignee: Wyeth Holdings LLC
•
Filing: 1958-02-17
•
Granted: 1960-05-31
•
Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Fred M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:42
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6509; C07F9/650952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A MEMATOCIDAL COMPOSITION COMPRISING AN INERT CARRIER, A MEMBER OF THE GROUP CONSISTING OF A SURFACE ACTIVE AGENT AND A DISPERSING AGENT, AND AN EFFECTIVE AMOUNT OF A PHOSPHOROTHIOATE COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
34 words
A MEMATOCIDAL COMPOSITION COMPRISING AN INERT CARRIER, A MEMBER OF THE GROUP CONSISTING OF A SURFACE ACTIVE AGENT AND A DISPERSING AGENT, AND AN EFFECTIVE AMOUNT OF A PHOSPHOROTHIOATE COMPOUND OF THE GENERAL FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |