US2884441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing b-hydrocarbonsubstituted boron compounds
Assignee: Wyeth Holdings LLC
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Filing: 1957-10-21
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Granted: 1959-04-28
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Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Groszos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:24
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE METHOD WHICH COMPRISES REACTING TOGETHER (1) A HALIDE REPRESENTED BY THE GENERAL FORMULA (A) R''''''X WHEREIN R'''''' HAS THE MEANING HEREINAFTER GIVEN, AND X REPRESENTS A HALOGEN SELECTED FROM THE CLASS CONSISTING OF CHLORINE, BROMINE AND IODINE, AND (2) AN ESTER OF AN OXY ACID OF BORON SELECTED FROM THE CLASS CONSISTING OF THOSE REPRESENTED BY THE GENERAL FORMULAS
Claim 2
Independent Claim
60 words
THE METHOD WHICH COMPRISES REACTING TOGETHER (1) A HALIDE REPRESENTED BY THE GENERAL FORMULA (A) R''''''X WHEREIN R'''''' HAS THE MEANING HEREINAFTER GIVEN, AND X REPRESENTS A HALOGEN SELECTED FROM THE CLASS CONSISTING OF CHLORINE, BROMINE AND IODINE, AND (2) AN ESTER OF AN OXY ACID OF BORON SELECTED FROM THE CLASS CONSISTING OF THOSE REPRESENTED BY THE GENERAL FORMULAS
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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |