US3965215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cohesive sealant articles
Assignee: Raychem Corp
•
Filing: 1973-10-31
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Granted: 1976-06-22
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Expires: 1993-10-31
Abstract
Abstract Coherent articles essentially comprised of a mastic material uniformly dispersed throughout a cross-linked polymeric matrix may be employed in, eg, sheet form as sealants for wire and cable terminations, pipe junctions and the like. Adjacent layers of the articles may be amalgamated by heating, yet they are sufficiently crosslinked as to permit the impartation of heat recoverability.
Inventors
- 👤 Eugene F. Lopez
- 👤 Anthony Charles Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:32
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C08; C08L; C08L95/00; C09K2003/1034; C09K2003/1068; C09K2200/00; C09K2200/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
40 words
A coherent article essentially comprised of a mastic material uniformly dispersed throughout the interstices of a cross-linked polymeric matrix present in the article in minor proportion sufficient in extent to maintain it coherent at a transition temperature of the matrix.
Claim 2
Dependent Claim
40 words
A coherent article essentially comprised of a mastic material uniformly dispersed throughout the interstices of a cross-linked polymeric matrix present in the article in minor proportion sufficient in extent to maintain it coherent at a transition temperature of the matrix.
Claim 3
Dependent Claim
15 words
An article according to claim 1 which exhibits second order cohesive blocking at room temperature.
Claim 4
Dependent Claim
28 words
An article according to claim 1 containing said matrix in an amount of from about 15% to about 25% by weight, based on the weight of said article.
Claim 5
Dependent Claim
20 words
An article according to claim 2 wherein said matrix is polyethylene and wherein said mastic material comprises a polyisobutylene rubber.
Claim 6
Dependent Claim
20 words
An article according to claim 3 wherein said matrix is polyethylene and wherein said mastic material comprises a polyisobutylene rubber.
Claim 7
Dependent Claim
8 words
A heat recoverable article according to claim 1.
Claim 8
Dependent Claim
8 words
A heat recoverable article according to claim 2.
Claim 9
Dependent Claim
8 words
A heat recoverable article according to claim 3.
Claim 10
Dependent Claim
8 words
A heat recoverable article according to claim 4.
Claim 11
Dependent Claim
8 words
A heat recoverable article according to claim 5.
References Cited (Backward Citations)
US3265770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |