Patent US3422149A successfully refreshed from Google Patents.
US3422149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl (triorgano) phosphonium halides and the preparation thereof
Assignee: Wyeth Holdings LLC
•
Filing: 1966-03-08
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Granted: 1969-01-14
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Expires: 1986-03-08
Abstract
No abstract record available.
Inventors
- 👤 Michael M Rauhut
- 👤 Grace B Borowitz
- 👤 Martin Grayson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:34
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF PREPARING A VINYLPHOSPHONIUM SALT OF THE FORMULA R1-P(+)(-R2)(-R3)-CH=CH2 X(-) WHICH COMPRISES REACTIVELY CONTACTING WITH A BASE A PHOSPHONIUM SALT OF THE FORMULA R1-P(+)(-R2)(-R3)-CH2-CH2-O-Y X(-) WHEREIN THE ABOVE FORMULAS, R1, R2 AND R3 ARE EACH ALKYL (C1-C26), SUBSTITUTED ALKYL (C1-C16), CYCLOALKYL, ARYL, OR SUBSTITUTED ARYL, SAID SUBSTITUENTS FOR ALKYL AND ARYL BEING ALKOXY, HALOGEN, OR CYANO, X IS HALOGEN OR TETRAPHENYL BORATE, AND Y IS THE RESIDUE OF AN ESTERIFYING AGENT.
Claim 2
Independent Claim
73 words
A METHOD OF PREPARING A VINYLPHOSPHONIUM SALT OF THE FORMULA R1-P(+)(-R2)(-R3)-CH=CH2 X(-) WHICH COMPRISES REACTIVELY CONTACTING WITH A BASE A PHOSPHONIUM SALT OF THE FORMULA R1-P(+)(-R2)(-R3)-CH2-CH2-O-Y X(-) WHEREIN THE ABOVE FORMULAS, R1, R2 AND R3 ARE EACH ALKYL (C1-C26), SUBSTITUTED ALKYL (C1-C16), CYCLOALKYL, ARYL, OR SUBSTITUTED ARYL, SAID SUBSTITUENTS FOR ALKYL AND ARYL BEING ALKOXY, HALOGEN, OR CYANO, X IS HALOGEN OR TETRAPHENYL BORATE, AND Y IS THE RESIDUE OF AN ESTERIFYING AGENT.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |