US2587581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azide modified fuels and lubricants
Assignee: Individual
•
Filing: 1948-05-10
•
Granted: 1952-03-04
•
Expires: 1968-05-10
Abstract
No abstract record available.
Inventors
- 👤 Shappirio Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10M; C10M1/00; C10M1/08; C10L1/24; C10L1/26; C10M2215/00; C10M2215/18; C10M2215/182; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/08; C10M2227/00; C10M2227/08; C10M2227/082; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A LIQUID PETROLEUM DISTILLATE CONTAINING AS A BENEFICIATING AGENT, FROM .05 TO 5% BY WEIGHT OF A SULPHAZIDE HAVING THE FORMULA R.NH.NHSO2R'', WHERE R AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS.
Claim 2
Dependent Claim
37 words
A LIQUID PETROLEUM DISTILLATE CONTAINING AS A BENEFICIATING AGENT, FROM .05 TO 5% BY WEIGHT OF A SULPHAZIDE HAVING THE FORMULA R.NH.NHSO2R'', WHERE R AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |