US3304270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of hexahydrodiazaphosphorines or diazaphospholidines and silanes
Assignee: Dow Chemical Co
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Filing: 1964-09-21
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Granted: 1967-02-14
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Richard T Dickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:42
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A POLYMER CONSISTING ESSENTIALLY OF A STRUCTURE HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
A POLYMER CONSISTING ESSENTIALLY OF A STRUCTURE HAVING THE FORMULA
Claim 3
Dependent Claim
19 words
THE PROCESS OF PREPARING A POLYMERIC COMPOSITION COMPRISING THE STEPS OF REACTING (A) A HETEROCYCLIC COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
19 words
THE PROCESS OF PREPARING A POLYMERIC COMPOSITION COMPRISING THE STEPS OF REACTING (A) A HETEROCYCLIC COMPOUND 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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |