US2908720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl-trihydroxy-tetrahydronaphthylethylene glycols
Assignee: Universal Oil Products Co
•
Filing: 1955-11-10
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Granted: 1959-10-13
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Expires: 1975-11-10
Abstract
No abstract record available.
Inventors
- 👤 Carl B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:49
CPC Classifications
C; C10; C10L; C10L7/00; C10L7/02; B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0065; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
AN ALKYL SUBSTITUTED-2,3,4-TRIHYDROXY-1,2,3,4-TETRAHYDRO-1-NAPHTHY-ETHYLENE GLYCOL.
Claim 2
Dependent Claim
4 words
AN ALKYL SUBSTITUTED-2,3,4-TRIHYDROXY-1,2,3,4-TETRAHYDRO-1-NAPHTHY-ETHYLENE GLYCOL.
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |