US3377385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyoxyalkylene polyols
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1967-04-24
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Granted: 1968-04-09
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Expires: 1987-04-24
Abstract
No abstract record available.
Inventors
- 👤 Turumaru Takesi
- 👤 Yotsuzuka Masaru
- 👤 Ogino Katsuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:09
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/34; C07C41/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
STABILIZED POLYOXYALKYLENE POLYOL CONSISTING ESSENTIALLY OF A UNIFORM ADMIXTURE OF P,P''-BIPHENOL AND OF POLYOXYALKYLENE POLYOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 350 TO 8000, THE P,P''-BIPHENOL CONSTITUTING AT LEAST 0.05% BY WEIGHT OF THE ADMIXTURE, THE ALKYLENE BEING LOWER ALKYLENE.
Claim 2
Dependent Claim
40 words
STABILIZED POLYOXYALKYLENE POLYOL CONSISTING ESSENTIALLY OF A UNIFORM ADMIXTURE OF P,P''-BIPHENOL AND OF POLYOXYALKYLENE POLYOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 350 TO 8000, THE P,P''-BIPHENOL CONSTITUTING AT LEAST 0.05% BY WEIGHT OF THE ADMIXTURE, THE ALKYLENE BEING LOWER ALKYLENE.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |