Patent US2805200A successfully refreshed from Google Patents.
US2805200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting waxy deposits in oil wells and compositions therefor
Assignee: Diamond Shamrock Corp
•
Filing: 1954-03-11
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Granted: 1957-09-03
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Edison G Lee
- 👤 Helen P Brush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:41
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: 2
Claim 1
Independent Claim
30 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY MIXTURE OF SUBSTANTIAL QUANTITIES OF A HALOGENATED ETHYLENIC COMPOUND AND A LIQUID HALOGENATED AROMATIC COMPOUND, SAID MIXTURE HAVING IMPROVED OIL WELL WAX SOLVENT PROPERTIES.
Claim 2
Dependent Claim
30 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY MIXTURE OF SUBSTANTIAL QUANTITIES OF A HALOGENATED ETHYLENIC COMPOUND AND A LIQUID HALOGENATED AROMATIC COMPOUND, SAID MIXTURE HAVING IMPROVED OIL WELL WAX SOLVENT PROPERTIES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |