US2635084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof siloxane cements
Assignee: —
•
Filing: 1949-11-28
•
Granted: 1953-04-14
•
Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08G; C08G77/00; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A WATERPROOF CEMENT COMPOSITION CAPABLE OF SETTING AT NORMAL TEMPERATURE COMPRISING A MIXTURE OF FLUID METHYL POLYSILOANES WHICH HAVE A CH3:SI RATIO OF AT MOST 1.4, WHICH CONTAIN ONLY 8 TO 20 SILICON ATOMS IN POLYSILOXANE MOLECULE, WHICH MIXTURE BOILS FROM 120 TO 250* C. AT A PRESSURE OF 8MM. OF MERCURY AND WHICH GELS AT ROOM TEMPERATURE IN THE THE PRESENCE OF SMALL QUANTITIES OF LEAD NAPHTHENATE, THE SAID POLYSILOXANES BEING THE ONLY SILOXANE COMPOUNDS PRESENT, A FILLER IN PROPORTION SUFFICIENT TO MAKE THE COMPOSITION A THICK PASTE AND AN ORGANIC METAL DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF THE ACETATES, STEARATES AND PHENATES OF LEAD AND LITHIUM.
Claim 2
Dependent Claim
109 words
A WATERPROOF CEMENT COMPOSITION CAPABLE OF SETTING AT NORMAL TEMPERATURE COMPRISING A MIXTURE OF FLUID METHYL POLYSILOANES WHICH HAVE A CH3:SI RATIO OF AT MOST 1.4, WHICH CONTAIN ONLY 8 TO 20 SILICON ATOMS IN POLYSILOXANE MOLECULE, WHICH MIXTURE BOILS FROM 120 TO 250* C. AT A PRESSURE OF 8MM. OF MERCURY AND WHICH GELS AT ROOM TEMPERATURE IN THE THE PRESENCE OF SMALL QUANTITIES OF LEAD NAPHTHENATE, THE SAID POLYSILOXANES BEING THE ONLY SILOXANE COMPOUNDS PRESENT, A FILLER IN PROPORTION SUFFICIENT TO MAKE THE COMPOSITION A THICK PASTE AND AN ORGANIC METAL DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF THE ACETATES, STEARATES AND PHENATES OF LEAD AND LITHIUM.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |