US3437623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grafted waxes
Assignee: Baker Petrolite LLC
•
Filing: 1966-02-14
•
Granted: 1969-04-08
•
Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 William J Heintzelman
- 👤 Michael I Naiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:49
CPC Classifications
C; C08; C08F; C08F289/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2596960A
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US2561816A
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US2681323A
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US2706719A
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US2964456A
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US2928797A
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US2944039A
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US3030322A
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US2979476A
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US3330791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |