US2565524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-resin foams
Assignee: Ellis Foster Co
•
Filing: 1947-03-03
•
Granted: 1951-08-28
•
Expires: 1967-03-03
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 Spialter Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:51
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/22; C08G77/24; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF PRODUCING AN ORGANO SILICON OXIDE FROTH WHICH COMPRISES FROTHING BY HEATING IN LIQUID CONDITION AT A FROTH-PRODUCING TEMPERATURE OF AT LEAST 100* C., IN THE ABSENCE OF ANY ADDED FROTH-PRODUCING AGENT, A LIQUEFIABLE RESINFORMING ORGANO SILICONE CAPABLE OF FROTHING IN THE ABSENCE OF ANY ADDED FROTHING AGENT WHILE IN THE THE LIQUID STATE AT ELEVATED TEMPERATURE AND CAPABLE OF BEING TRANSFORMED TO THE SOLID STATE BY HEAT ALONE, THE ORGANO GROUPS BEING MONOVALENT HYDROCARBON RADICALS, THE RATIO OF HYDROCARBON GROUPS TO SILICON BEING AN AVERAGE OF FROM 0.5 TO LESS THAN 2 PER SILICON ATOM, SAID SILICONE BEING THE ONLY REACTANT PRESENT, AND TRANSFORMING THE LIQUID FROTH TO SOLID STATE BY HEAT ALONE.
Claim 2
Independent Claim
116 words
THE METHOD OF PRODUCING AN ORGANO SILICON OXIDE FROTH WHICH COMPRISES FROTHING BY HEATING IN LIQUID CONDITION AT A FROTH-PRODUCING TEMPERATURE OF AT LEAST 100* C., IN THE ABSENCE OF ANY ADDED FROTH-PRODUCING AGENT, A LIQUEFIABLE RESINFORMING ORGANO SILICONE CAPABLE OF FROTHING IN THE ABSENCE OF ANY ADDED FROTHING AGENT WHILE IN THE THE LIQUID STATE AT ELEVATED TEMPERATURE AND CAPABLE OF BEING TRANSFORMED TO THE SOLID STATE BY HEAT ALONE, THE ORGANO GROUPS BEING MONOVALENT HYDROCARBON RADICALS, THE RATIO OF HYDROCARBON GROUPS TO SILICON BEING AN AVERAGE OF FROM 0.5 TO LESS THAN 2 PER SILICON ATOM, SAID SILICONE BEING THE ONLY REACTANT PRESENT, AND TRANSFORMING THE LIQUID FROTH TO SOLID STATE BY HEAT ALONE.
References Cited (Backward Citations)
US2386995A
Cited
US2410737A
Cited
US2460795A
Cited
US2441422A
Cited
US2441423A
Cited
US2448556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |