US3012057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricants and their preparation
Assignee: Pure Oil Co
•
Filing: 1958-08-14
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Granted: 1961-12-05
•
Expires: 1978-08-14
Abstract
No abstract record available.
Inventors
- 👤 William L Fierce
- 👤 Walter J Sandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:01
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF PREPARING SYNTHETIC MIXED PHOSPHATE LUBRICANTS HAVING ENHANCED PHYSICAL PROPERTIES OVER THE SYMMETRICAL COUNTERPART WHICH COMPRISES REACTING PHOSPHORUS OXYHALIDE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, PHOSPHORUS OXYBROMIDE AND PHOSPHORUS OXYIODIDE WITH A MIXTURE CONTAINING A COMPOUND OF THE FORMULA:
Claim 2
Independent Claim
43 words
THE METHOD OF PREPARING SYNTHETIC MIXED PHOSPHATE LUBRICANTS HAVING ENHANCED PHYSICAL PROPERTIES OVER THE SYMMETRICAL COUNTERPART WHICH COMPRISES REACTING PHOSPHORUS OXYHALIDE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, PHOSPHORUS OXYBROMIDE AND PHOSPHORUS OXYIODIDE WITH A MIXTURE CONTAINING A COMPOUND OF THE FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |