US2607737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation product of a 2-thiothiazole, formaldehyde, and alkyl phenol to inhibit sulfur corrosive lubricants
Assignee: California Research LLC
•
Filing: 1949-07-09
•
Granted: 1952-08-19
•
Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Richard L Woodruff
- 👤 William T Stewart
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:15
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G16/00; C08G16/02; C08G16/025; C08G16/0275; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/108; C10M2209/109; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/135; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A SULFUR-CONTAINING LUBRICATING OIL COMPOSITION SEVERLY CORROSIVE TO SILVER, AND SMALL AMOUNTS, SUFFICIENT SUBSTANTIALLY WHEN PRESENT IN COMBINATION TO REDUCE THE SULFUR ATTACK ON SILVER, OF A CONDENSATION PRODUCT OBTAINED BY REACTING TOGETHER EQUAL MOLAR PROPORTIONS OF A 2-MERCAPTO-THIAZOLE, FORMALDEHYDE AND AN ALKYL PHENOL WHEREIN THE ALKYL GROUP IS AN ALIPHATIC GROUP CONTAINING FROM 12 TO 18 CARBON ATOMS AT A TEMPERATURE GREATER THAN 105* C. FOR AT LEAST 30 MINUTES.
Claim 2
Dependent Claim
80 words
A LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A SULFUR-CONTAINING LUBRICATING OIL COMPOSITION SEVERLY CORROSIVE TO SILVER, AND SMALL AMOUNTS, SUFFICIENT SUBSTANTIALLY WHEN PRESENT IN COMBINATION TO REDUCE THE SULFUR ATTACK ON SILVER, OF A CONDENSATION PRODUCT OBTAINED BY REACTING TOGETHER EQUAL MOLAR PROPORTIONS OF A 2-MERCAPTO-THIAZOLE, FORMALDEHYDE AND AN ALKYL PHENOL WHEREIN THE ALKYL GROUP IS AN ALIPHATIC GROUP CONTAINING FROM 12 TO 18 CARBON ATOMS AT A TEMPERATURE GREATER THAN 105* C. FOR AT LEAST 30 MINUTES.
References Cited (Backward Citations)
US2201258A
Cited
US2154096A
Cited
US2318629A
Cited
US2334594A
Cited
US2414257A
Cited
US2384002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |