US3203926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolycarbonates of di-(bisphenol) ethers and bisphenols and processes for their production
Assignee: Honeywell International Inc
•
Filing: 1961-09-12
•
Granted: 1965-08-31
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Expires: 1981-09-12
Abstract
No abstract record available.
Inventors
- 👤 Rudolph D Deanin
- 👤 Ann V Pinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AS A NEW COMPOSITION OF MATTER A COPOLYCARBONATE CHARACTERIZED BY CONTAINING A RANDOM DISTRIBUTION OF DIVALENT RADICALS HAVING THE STRUCTURES
Claim 2
Dependent Claim
20 words
AS A NEW COMPOSITION OF MATTER A COPOLYCARBONATE CHARACTERIZED BY CONTAINING A RANDOM DISTRIBUTION OF DIVALENT RADICALS HAVING THE STRUCTURES
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |