US4535097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular thermoset poly (dicyclopentadiene)
Assignee: Metton America Inc
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Filing: 1983-08-26
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Granted: 1985-08-13
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Expires: 2003-08-26
Abstract
Abstract Disclosed is a cellular thermoset poly(dicyclopentadiene) having a density of from about 0.2 to about 0.85 g/ml.
Inventors
- 👤 Norman R. Newburg, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:56
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08J9/0066; C08J9/04; C08J9/12; C08J9/14; C08J2345/00; C08J2421/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
23 words
A cellular thermoset homopolymer comprised of polymerized units of dicyclopentadiene monomer and having a density of from about 0.2 to about 0.85 g/ml.
Claim 2
Dependent Claim
23 words
A cellular thermoset homopolymer comprised of polymerized units of dicyclopentadiene monomer and having a density of from about 0.2 to about 0.85 g/ml.
Claim 3
Dependent Claim
46 words
A cellular thermoset copolymer comprised of polymerized units of dicyclopentadiene monomer and up to about 10%, based on the weight of dicyclopentadiene, of another monomer selected from the group consisting of norbornene and norbornadiene, and having a density of from about 0.2 to about 0.85 g/ml.
Claim 4
Dependent Claim
46 words
A cellular thermoset copolymer comprised of polymerized units of dicyclopentadiene monomer and up to about 10%, based on the weight of dicyclopentadiene, of another monomer selected from the group consisting of norbornene and norbornadiene, and having a density of from about 0.2 to about 0.85 g/ml.
Claim 5
Dependent Claim
28 words
The cellular thermoset homopolymer of claim 1 having from about 3 to about 15 weight percent, based on the weight of the monomer, preformed elastomer intimately dispersed therein.
Claim 6
Dependent Claim
29 words
The cellular thermoset copolymer of claim 2 having from about 3 to about 15 weight percent, based on the weight of the combined monomers, preformed elastomer intimately dispersed therein.
References Cited (Backward Citations)
US4029840A
Cited
US4400340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |