US2985607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber additives
Assignee: Union Carbide Corp
•
Filing: 1957-03-05
•
Granted: 1961-05-23
•
Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 James O Koehler
- 👤 Lamprey Headlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
RUBBER STOCK MODIFIED IN PROPERTIES BY INCORPORATION THEREIN OF AT LEAST ONE ADDITIVE SELECTED FROM THE GROUP CONSISTING OF THE ACYLATES OF TIN, LEAD AND SILICON, THE AMINO ALCOHOLS OF TIN, LEAD, SILICON AND ZIRCONIUM, AND THE POLYHYDRIC ALCOHOLATES OF TIN, LEAD, SILICON, ZIRCONIUM AND MIXTURES THEREOF, SAID ACYLATES HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |