US3033805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent-foaming vinyl aromatic resin compositions containing tetramethylsilane as blowing agent
Assignee: Dow Chemical Co
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Filing: 1958-12-12
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Granted: 1962-05-08
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Expires: 1978-12-12
Abstract
No abstract record available.
Inventors
- 👤 Louis C Rubens
- 👤 Warren Judith Sund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:26
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/16; C08J9/20; C08J2325/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A LATENT-FOAMING THERMOPLASTIC COMPOSITION OF MATTER COMPRISING FROM 85 TO 98 PERCENT BY WEIGHT OF A NORMALLY SOLID NON-POROUS THERMOPLASTIC VINYL AROMATIC RESIN CONSISTING OF AT LEAST ONE POLYMERIZED VINYL AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF (AD) MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES, (B) NUCLEAR HALOGENATED MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND (C) FROM 99.5 TO 99.99 PERCENT BY WEIGHT OF AT LEAST ONE OF THE COMPOUNDS (A) AND (B) AND FROM 0.5 TO 0.01 PERCENT OF A DIVINYL AROMATIC HYHDROCARBON OF THE BENZENE SERIES, AND FROM 15 TO 2 PERCENT OF TETRAMETHYLSILANE UNIFORMLY DISPERSED THROUGHOUT SAID VINYL AROMATIC RESIN.
Claim 2
Dependent Claim
105 words
A LATENT-FOAMING THERMOPLASTIC COMPOSITION OF MATTER COMPRISING FROM 85 TO 98 PERCENT BY WEIGHT OF A NORMALLY SOLID NON-POROUS THERMOPLASTIC VINYL AROMATIC RESIN CONSISTING OF AT LEAST ONE POLYMERIZED VINYL AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF (AD) MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES, (B) NUCLEAR HALOGENATED MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND (C) FROM 99.5 TO 99.99 PERCENT BY WEIGHT OF AT LEAST ONE OF THE COMPOUNDS (A) AND (B) AND FROM 0.5 TO 0.01 PERCENT OF A DIVINYL AROMATIC HYHDROCARBON OF THE BENZENE SERIES, AND FROM 15 TO 2 PERCENT OF TETRAMETHYLSILANE UNIFORMLY DISPERSED THROUGHOUT SAID VINYL AROMATIC RESIN.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |