US3178402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery polymer of 1, 3-butadiene having a high cis 1, 4-addition
Assignee: Phillips Petroleum Co
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Filing: 1965-01-13
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Granted: 1965-04-13
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Expires: 1985-01-13
Abstract
No abstract record available.
Inventors
- 👤 David R Smith
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:49
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F136/00; C08F136/02; C08F136/04; C08F136/06; Y; Y10; Y10S; Y10S273/00; Y10S273/10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/1081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A RUBBERY POLYMER OF 1,3-BUTADIENE CHARACTERIZED BY AT LEAST 85 PERCENT CIS 1,4-ADDITION.
Claim 2
Dependent Claim
13 words
A RUBBERY POLYMER OF 1,3-BUTADIENE CHARACTERIZED BY AT LEAST 85 PERCENT CIS 1,4-ADDITION.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |