US2870109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated silica aerogel, silicone rubber reinforced therewith and method of making
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-05-06
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Granted: 1959-01-20
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Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:05
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
SILICA AEROGEL PARTICLES HAVING AN ACID NUMBER OF 0.1 AND HIGHER BUT BELOW 0.8 AND A COATING OF A DIMETHYL SILI CONE OIL PREPARED BY THE ACID HYDROLYSIS OF DIMETHYLDI CHLOROSILANE, SAID PARTICLES BEING FURTHER CHARACTERIZED IN THAT THEY ARE PARTIALLY TO COMPLETE LY HYDROPHOBIC AND CON TAIN FROM 1 TO 20% BY WEIGHT OF SAID OIL, BASED ON THE SILICA AEROGEL.
Claim 2
Dependent Claim
62 words
SILICA AEROGEL PARTICLES HAVING AN ACID NUMBER OF 0.1 AND HIGHER BUT BELOW 0.8 AND A COATING OF A DIMETHYL SILI CONE OIL PREPARED BY THE ACID HYDROLYSIS OF DIMETHYLDI CHLOROSILANE, SAID PARTICLES BEING FURTHER CHARACTERIZED IN THAT THEY ARE PARTIALLY TO COMPLETE LY HYDROPHOBIC AND CON TAIN FROM 1 TO 20% BY WEIGHT OF SAID OIL, BASED ON THE SILICA AEROGEL.
References Cited (Backward Citations)
US2428608A
Cited
US2567315A
Cited
US2610167A
Cited
US2563555A
Cited
US2568672A
Cited
US2666041A
Cited
US2744079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |