US3481870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for inhibiting the formation of in and removing from oil wells and pipelines deposits of paraffin and paraffinlike deposits
Assignee: Baker Petrolite LLC
•
Filing: 1964-09-28
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Granted: 1969-12-02
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jen-Pu Cheng
- 👤 John L Hampton
- 👤 Arthur F Wirtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2213477A
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US2602778A
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US2805200A
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US3236769A
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US2927078A
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US2981684A
Cited
US3241614A
Cited
US3395757A
Cited
US3282843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |