US3528841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing tackiness of polymer pellets
Assignee: Millennium Petrochemicals Inc
•
Filing: 1967-11-15
•
Granted: 1970-09-15
•
Expires: 1987-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles R Donaldson
- 👤 James S Yang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:27
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2678285A
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US3073790A
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US2898233A
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GB928120A
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US3422049A
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GB1041014A
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US3248253A
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US3217113A
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GB1025280A
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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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |