US2803606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered siloxane resin and process of preparing cellular resin therefrom
Assignee: Dow Silicones Corp
•
Filing: 1954-03-12
•
Granted: 1957-08-20
•
Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Donald E Weyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:05
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF PREPARING A SILOXANE RESIN FOAM OF UNIFORM DENSITY WHICH COMPRISES HEATING A POWDER COMPRISING A MIXTURE OF A SILOXANE RESIN, AT A TEMPERATURE CATALYST FOR SETTING THE SILOXANE RESIN, AT A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF THE BLOWING AGENT AND ABOVE THE SOFTENING POINT OF THE RESIN, UNTIL THE FOAMED RESIN IS CURED, SAID SILOXANE RESIN BEING OF THE UNIT FORMULA
Claim 2
Independent Claim
65 words
A METHOD OF PREPARING A SILOXANE RESIN FOAM OF UNIFORM DENSITY WHICH COMPRISES HEATING A POWDER COMPRISING A MIXTURE OF A SILOXANE RESIN, AT A TEMPERATURE CATALYST FOR SETTING THE SILOXANE RESIN, AT A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF THE BLOWING AGENT AND ABOVE THE SOFTENING POINT OF THE RESIN, UNTIL THE FOAMED RESIN IS CURED, SAID SILOXANE RESIN BEING OF THE UNIT FORMULA
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |