Patent US3030295A successfully refreshed from Google Patents.
US3030295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for electrolytic cells
Assignee: Lockheed Martin Corp
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Filing: 1959-11-09
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Granted: 1962-04-17
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Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Barge Robert F La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:00
CPC Classifications
C; C25; C25B; C25B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF SEALING THE JOINTS AROUND AND BETWEEN SECTIONS OF ELECTROLYTIC CELLS USED IN THE PRODUCTION OF CHLORINE COMPRISING APPLYING TO SAID JOINT A MASTIC SEALING COMPOSITION CONSISTING ESSENTIALLY OF APPROXIMATELY 31.7% BY WEIGHT OF A CRUDE OIL (STEAM REFINED STOCK) HAVING A S.A.E. NUMBE OF APPROXIMATELY 80, APPROXIMATELY 5.6% BY WEIGHT OF GR-S RUBBER, APPROXIMATELY 38.8% BY WEIGHT OF CANADIAN ASBESTOS, APPROXIMATELY 15.4% BY WEIGHT OF LIMESTONE, APPROXIMATELY 7.7% BY WEIGHT OF KALINE TYPE CLAY, APPROXIMATELY 0.7% BY WEIGHT OF OLEIC ACID AND APPROXIMATELY 0.1% BY WEIGHT OF CARBON BLACK, SAID COMPOSITION HAVING A NEEDLY PENETRATION BETWEEN APPROXIMATELY 80-120 MM. AND A FLASH POINT GREATER THAN 450*F. AND BEING NONHARDENING AT TEMPERATURES BELOW 180*F.
Claim 2
Independent Claim
116 words
THE METHOD OF SEALING THE JOINTS AROUND AND BETWEEN SECTIONS OF ELECTROLYTIC CELLS USED IN THE PRODUCTION OF CHLORINE COMPRISING APPLYING TO SAID JOINT A MASTIC SEALING COMPOSITION CONSISTING ESSENTIALLY OF APPROXIMATELY 31.7% BY WEIGHT OF A CRUDE OIL (STEAM REFINED STOCK) HAVING A S.A.E. NUMBE OF APPROXIMATELY 80, APPROXIMATELY 5.6% BY WEIGHT OF GR-S RUBBER, APPROXIMATELY 38.8% BY WEIGHT OF CANADIAN ASBESTOS, APPROXIMATELY 15.4% BY WEIGHT OF LIMESTONE, APPROXIMATELY 7.7% BY WEIGHT OF KALINE TYPE CLAY, APPROXIMATELY 0.7% BY WEIGHT OF OLEIC ACID AND APPROXIMATELY 0.1% BY WEIGHT OF CARBON BLACK, SAID COMPOSITION HAVING A NEEDLY PENETRATION BETWEEN APPROXIMATELY 80-120 MM. AND A FLASH POINT GREATER THAN 450*F. AND BEING NONHARDENING AT TEMPERATURES BELOW 180*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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |