Patent US5253283A successfully refreshed from Google Patents.
Patent US2978472A successfully refreshed from Google Patents.
US2978472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibiting oxidates and process for their production
Assignee: Texaco Inc
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Filing: 1958-01-24
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Granted: 1961-04-04
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 George B Kirkwood
- 👤 John H Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:19
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/02; C10M159/04; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1805; C10M129/00; C10M2203/00; C10N; C10N2030/00; C10N2030/12; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A METHOD OF PRODUCING A PARAFFINIC LUBRICATING OIL LIQUID OXIDATE CHARACTERIZED BY A NEUT. NO. BETWEEN ABOUT 55 AND 80, A SAP. NO. BETWEEN ABOUT 100 AND 200 AND AN UNSAPONIFIABLE CONTACT LESS THAN ABOUT 55 WT. PERCENT COMPRISING REACTING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A METALLIFEROUS CATALYST, A REFINED PARAFFINIC LUBRICATING OIL WITH AIR AT AN AIR RATE OF ABOUT 8-50 CU. FT/LB. OIL/HR., AT AN AIR VELOCITY OF ABOUT 0.1 TO 6 FT/SEC., AT AN OXIDATION TEMPERATURE BETWEEN ABOUT 250 AND 400*F. AND AT A PRESSURE BETWEEN ABOUT 30 AND 300 P.S.I.G., SUBSEQUENTLY COOLING SAID OXIDATE AT A COOLING RATE BETWEEN ABOUT 5 AND 50*F./MINUTE, SAID LUBRICATING OIL HAVING A VISCOSITY BETWEEN 90 AND 350 SUS AT 100* F., A POUR POINT LESS THAN 10*F., AN AMILINE POINT BETWEEN 210 AND 230*F., AND ALOVIBOND 1/2" CELL COLOR RATING OF LESS THAN 100.
Claim 2
Independent Claim
147 words
A METHOD OF PRODUCING A PARAFFINIC LUBRICATING OIL LIQUID OXIDATE CHARACTERIZED BY A NEUT. NO. BETWEEN ABOUT 55 AND 80, A SAP. NO. BETWEEN ABOUT 100 AND 200 AND AN UNSAPONIFIABLE CONTACT LESS THAN ABOUT 55 WT. PERCENT COMPRISING REACTING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A METALLIFEROUS CATALYST, A REFINED PARAFFINIC LUBRICATING OIL WITH AIR AT AN AIR RATE OF ABOUT 8-50 CU. FT/LB. OIL/HR., AT AN AIR VELOCITY OF ABOUT 0.1 TO 6 FT/SEC., AT AN OXIDATION TEMPERATURE BETWEEN ABOUT 250 AND 400*F. AND AT A PRESSURE BETWEEN ABOUT 30 AND 300 P.S.I.G., SUBSEQUENTLY COOLING SAID OXIDATE AT A COOLING RATE BETWEEN ABOUT 5 AND 50*F./MINUTE, SAID LUBRICATING OIL HAVING A VISCOSITY BETWEEN 90 AND 350 SUS AT 100* F., A POUR POINT LESS THAN 10*F., AN AMILINE POINT BETWEEN 210 AND 230*F., AND ALOVIBOND 1/2" CELL COLOR RATING OF LESS THAN 100.
Claim 3
Dependent Claim
58 words
A REFINED PARAFFINIC LUBRICATING OIL LIQUID OXIDATE CHARACTERIZED BY A NEUT. NO. BETWEEN ABOUT 55 AND 80, A SAP NO. BETWEEN ABOUT 100 AND 200, AND UNSAPONIFIABLE CONTENT LESS THAN ABOUT 55 WT. PERCNET, A POUR POINT LESS THAN 30*F., A VISCOSITY LESS THAN 200 SUS AT 210*F. AND LOVIBOND 1/2" CELL COLOR RATING OF LESS THAN 200.
Claim 4
Dependent Claim
58 words
A REFINED PARAFFINIC LUBRICATING OIL LIQUID OXIDATE CHARACTERIZED BY A NEUT. NO. BETWEEN ABOUT 55 AND 80, A SAP NO. BETWEEN ABOUT 100 AND 200, AND UNSAPONIFIABLE CONTENT LESS THAN ABOUT 55 WT. PERCNET, A POUR POINT LESS THAN 30*F., A VISCOSITY LESS THAN 200 SUS AT 210*F. AND LOVIBOND 1/2" CELL COLOR RATING OF LESS THAN 200.
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |