US3218271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable novolac composition and cellular phenolic body produced by cure
Assignee: Individual
•
Filing: 1962-07-17
•
Granted: 1965-11-16
•
Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Wong Robert
- 👤 Philip W Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J9/0014; C08J2361/00; C08J2361/04; C08J2361/06; C08J2483/00; Y; Y10; Y10S; Y10S521/00; Y10S521/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A FOAMABLE COMPOSITION COMPRISING ABOUT 80 PARTS OF A NOVOLAC, A QUANTITY OF A CURING AGENT WHICH IS REACTIVE WITH THE NOVOLAC, BY CONNECTING MOLECULES THEREOF THROUGH METHYLENE GROPS, AND SUFFICIENT IN AMOUNT TO CONVERT, AT AN ELEVATED TEMPERATURE, THE NOVOLAC TO A THERMOSET CONDITION, A BLOWING AGENT IN AN AMOUNT EFFECTIVE TO PRODUCE A FOAM, AND FROM ABOUT 0.2 PART TO ABOUT 10 PARTS OF A SILICATE HAVING THE GERNERIC FORMULA
Claim 2
Dependent Claim
72 words
A FOAMABLE COMPOSITION COMPRISING ABOUT 80 PARTS OF A NOVOLAC, A QUANTITY OF A CURING AGENT WHICH IS REACTIVE WITH THE NOVOLAC, BY CONNECTING MOLECULES THEREOF THROUGH METHYLENE GROPS, AND SUFFICIENT IN AMOUNT TO CONVERT, AT AN ELEVATED TEMPERATURE, THE NOVOLAC TO A THERMOSET CONDITION, A BLOWING AGENT IN AN AMOUNT EFFECTIVE TO PRODUCE A FOAM, AND FROM ABOUT 0.2 PART TO ABOUT 10 PARTS OF A SILICATE HAVING THE GERNERIC 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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |