US3271331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic foams stabilized by siloxane-oxyalkylene copolymers
Assignee: Union Carbide Corp
•
Filing: 1963-10-10
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Granted: 1966-09-06
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Expires: 1983-10-10
Abstract
No abstract record available.
Inventors
- 👤 Hans H Ender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2361/00; C08J2361/04; C08J2361/06; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A MIXTURE SUITABLE FOR USE IN PRODUCING A FOAMED PHENOL-ALDEHYDE RESIN, SAID MIXTURE COMPRISING: (A) A PHENOL ALDEHYDE RESOLE RESIN AND (B) A SILOXANE-OXYALKYLENE COPOLYMER AS FOAM STABILIZER FOR THE FOAMED PHENOL-ALLDEHYDE RESOLE RESIN, SAID COPOLYMER CONSISTING ESSENTIALLY OF (A) AT LEAST ONE SILOXANE CHAIN CONSISTING ESSENTIALLY OF AT LEAST TWO SILOXANE UNITS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
57 words
A MIXTURE SUITABLE FOR USE IN PRODUCING A FOAMED PHENOL-ALDEHYDE RESIN, SAID MIXTURE COMPRISING: (A) A PHENOL ALDEHYDE RESOLE RESIN AND (B) A SILOXANE-OXYALKYLENE COPOLYMER AS FOAM STABILIZER FOR THE FOAMED PHENOL-ALLDEHYDE RESOLE RESIN, SAID COPOLYMER CONSISTING ESSENTIALLY OF (A) AT LEAST ONE SILOXANE CHAIN CONSISTING ESSENTIALLY OF AT LEAST TWO SILOXANE UNITS REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US2629698A
Cited
US2608536A
Cited
US2653139A
Cited
US2933461A
Cited
US2846458A
Cited
US2993871A
Cited
US3081269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |