US2973279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing compositions
Assignee: American Marietta Co
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Filing: 1954-12-27
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Granted: 1961-02-28
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Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 William A Weidenbenner
- 👤 Lawrence A Balling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:03
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A SEALING COMPOSITION COMPRISING BETWEEN APPROXIMATELY 25% BY WEIGHT AND 50% BY WEIGHT OF A GILSONITE HAVING A MELTING POINT GREATER THAN APPROXIMATELY 325* F., BETWEEN APPROXIMATELY 25% BY WEIGHT AND 50% BY WEIGHT OF A NAPHTHENIC OIL HAVING THE FOLLOWING PROPERTIES: SPECIFIC GRAVITY (60/60*F.) 9.2 TO 9.4 VISCOSITY 100 TO 2600 (S.U. AT 100* F.), 35 TO 105 (S.U. AT 210* F.). POUR POINT -30 TO +5* F. AND BETWEEN 5% BY WEIGHT AND 20% BY WEIGHT OF A GREASE RESISTANT TO FLOW AT TEMPERATURES ABOVE APPROXIMATELY 240*F.
Claim 2
Dependent Claim
89 words
A SEALING COMPOSITION COMPRISING BETWEEN APPROXIMATELY 25% BY WEIGHT AND 50% BY WEIGHT OF A GILSONITE HAVING A MELTING POINT GREATER THAN APPROXIMATELY 325* F., BETWEEN APPROXIMATELY 25% BY WEIGHT AND 50% BY WEIGHT OF A NAPHTHENIC OIL HAVING THE FOLLOWING PROPERTIES: SPECIFIC GRAVITY (60/60*F.) 9.2 TO 9.4 VISCOSITY 100 TO 2600 (S.U. AT 100* F.), 35 TO 105 (S.U. AT 210* F.). POUR POINT -30 TO +5* F. AND BETWEEN 5% BY WEIGHT AND 20% BY WEIGHT OF A GREASE RESISTANT TO FLOW AT TEMPERATURES ABOVE APPROXIMATELY 240*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |