US3445492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylene or arylene bis(organosilyl,germanyl or stannyl imidophosphoranes,arsanes or stibanes) and the preparation thereof
Assignee: American Potash and Chemical Corp
•
Filing: 1966-08-01
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Granted: 1969-05-20
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert M Washburn
- 👤 Roger A Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/535; C07F9/5355; C07F9/66; C07F9/70; C07F9/90; C08; C08G; C08G79/00; C08G79/14; C08K; C08K5/00; C08K5/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR THE PREPARATION OF A NEW CLASS OF MONOMERIC COMPOUNDS WHICH COMPRISES REACTING UNDER ANHYDROUS CONDITIONS, (A) ONE MOLE OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
27 words
A PROCESS FOR THE PREPARATION OF A NEW CLASS OF MONOMERIC COMPOUNDS WHICH COMPRISES REACTING UNDER ANHYDROUS CONDITIONS, (A) ONE MOLE OF A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2912448A
Cited
US2988534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |