Patent EP0564957A2 successfully refreshed from Google Patents.
Patent US3458585A successfully refreshed from Google Patents.
US3458585A
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Process for the trimerization of butadiene
Assignee: International Lead Zinc Research Organization Inc
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Filing: 1968-01-09
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Granted: 1969-07-29
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Expires: 1988-01-09
Abstract
No abstract record available.
Inventors
- 👤 Henricus Gerardus Jos Overmars
- 👤 Jan Gerrit Noltes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:45
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2531/00; C07C2531/02; C07C2531/12; C07C2601/00; C07C2601/18; C07C2601/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3149174A
Cited
US3149173A
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US3214484A
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US3247269A
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US3247270A
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US3377397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |