Patent US2549535A successfully refreshed from Google Patents.
US2549535A
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Glass molding lubricant
Assignee: Standard Oil Development Co
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Filing: 1949-02-11
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Granted: 1951-04-17
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Expires: 1969-02-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Skooglund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:22
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C03; C03B; C03B40/00; C03B40/02; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/30; C10M2207/34; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A LUBRICATING COMPOSITION FOR MOLDING GLASS, AND THE LIKE, AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF 90 TO 99.5% BY WEIGHT OF HYDROCARBON OIL HAVING AN END BOILING POINT BELOW THE MOLDING TEMPERATURE, 0.1 TO 5% OF FINELY DIVIDED GRAPGITE AND 0.4 TO 5% OF AN ALKYL ESTER OF A FATTY ACID, SAID ESTER HAVING NOT MORE THAN 6 CARBON ATOMS IN THE GROUP AND 12 TO 24 CARBON ATOMS IN THE OTHER.
Claim 2
Dependent Claim
72 words
A LUBRICATING COMPOSITION FOR MOLDING GLASS, AND THE LIKE, AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF 90 TO 99.5% BY WEIGHT OF HYDROCARBON OIL HAVING AN END BOILING POINT BELOW THE MOLDING TEMPERATURE, 0.1 TO 5% OF FINELY DIVIDED GRAPGITE AND 0.4 TO 5% OF AN ALKYL ESTER OF A FATTY ACID, SAID ESTER HAVING NOT MORE THAN 6 CARBON ATOMS IN THE GROUP AND 12 TO 24 CARBON ATOMS IN THE OTHER.
References Cited (Backward Citations)
US2256603A
Cited
US1792052A
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US1879874A
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US2041076A
Cited
US2246463A
Cited
US2410422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |