US3530107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified catalyst system and process for production of polymers of 1-olefins
Assignee: Mitsui Toatsu Chemicals Inc
•
Filing: 1968-11-06
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Granted: 1970-09-22
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Expires: 1988-11-06
Abstract
No abstract record available.
Inventors
- 👤 Shiro Yoshioka
- 👤 Kimio Kurashima
- 👤 Yozo Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/06; C08F297/08; C08F297/083; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S526/908; Y10S526/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2893984A
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US3128252A
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US2968652A
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US3318859A
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US3241913A
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US3210332A
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US3318861A
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US3256257A
Cited
US3451768A
Cited
US3420809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |