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Patent US2563764A successfully refreshed from Google Patents.
US2563764A
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US
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Prevention of corrosive wear of moving metal parts
Assignee: Shell Development Co
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Filing: 1946-08-12
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Granted: 1951-08-07
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Expires: 1966-08-12
Abstract
No abstract record available.
Inventors
- 👤 Wachter Aaron
- 👤 Stillman Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:14
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L10/04; C10M; C10M1/00; C10M1/08; C10L1/222; C10L1/228; C10L1/2283; C10L1/232; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/08; C10M2215/082; C10M2215/10; C10M2215/102; C10M2215/18; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2221/02; C10M2221/04; C10M2221/043; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
IN THE OPERATION OF AN INTERNAL COMBUSTION ENGINE, THE STEP OF INTRODUCING INTO THE COMBUSTION CHAMBER OF SAID ENGINE A WEAR-INHIBITING AMOUNT OF AN ORGANIC BASE NITRITE HAVING A VAPOR PRESSURE OF AT LEAST 0.00002 MM. HG AT 21* C.
Claim 2
Dependent Claim
40 words
IN THE OPERATION OF AN INTERNAL COMBUSTION ENGINE, THE STEP OF INTRODUCING INTO THE COMBUSTION CHAMBER OF SAID ENGINE A WEAR-INHIBITING AMOUNT OF AN ORGANIC BASE NITRITE HAVING A VAPOR PRESSURE OF AT LEAST 0.00002 MM. HG AT 21* C.
References Cited (Backward Citations)
US1809833A
Cited
US2308282A
Cited
US2333206A
Cited
US2321517A
Cited
US2385158A
Cited
US2388132A
Cited
US2433243A
Cited
US2433716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |