US2841525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biological toxicants
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-04-18
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Granted: 1958-07-01
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Expires: 1976-04-18
Abstract
No abstract record available.
Inventors
- 👤 Gail H Birum
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/201; C07F9/08; C07F9/141; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS WHICH COMPRISES CONTACTING A PHOSPHIRE ESTER OF THE FORMULA (RO)2PXR'' WHERE R IS SELECTED FROM THE CLASS CONSISTING OF ALKYL CHLOROALKYL AND BROMO ALKYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF R AND ALKYLI METAL, AND X IS SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, AND AN ALKYLXANTHATE SALT OF THE FORMULA
Claim 2
Dependent Claim
58 words
THE PROCESS WHICH COMPRISES CONTACTING A PHOSPHIRE ESTER OF THE FORMULA (RO)2PXR'' WHERE R IS SELECTED FROM THE CLASS CONSISTING OF ALKYL CHLOROALKYL AND BROMO ALKYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF R AND ALKYLI METAL, AND X IS SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, AND AN ALKYLXANTHATE SALT OF 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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |