US4345625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joints of reinforced resin and process for their molding
Assignee: Sekisui Chemical Co Ltd
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Filing: 1980-08-13
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Granted: 1982-08-24
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Expires: 2000-08-13
Abstract
Abstract A pipe joint of a reinforced resin having a structure in which the wall of at least a socket portion consists of an inside surface layer composed of a cured product of a reinforced resin molding material, an outside surface layer composed of a cured product of a reinforced resin molding material, and an interlayer between these layers composed of a cured product of a resin mortar.
Inventors
- 👤 Masakatsu Mayumi
- 👤 Kenji Mitooka
- 👤 Sigeharu Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:21
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/06; F16L47/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A pipe joint having socket portions and one or more non-socket portions, said socket portions having a wall consisting of an inner surface layer composed of a cured reinforced resin molding material, an outer surface layer composed of a cured reinforced resin molding material, and an interlayer between said inner and outer layers composed of a cured resin mortar, said non-socket portions having a wall consisting of a cured reinforced resin molding material.
Claim 2
Dependent Claim
73 words
A pipe joint having socket portions and one or more non-socket portions, said socket portions having a wall consisting of an inner surface layer composed of a cured reinforced resin molding material, an outer surface layer composed of a cured reinforced resin molding material, and an interlayer between said inner and outer layers composed of a cured resin mortar, said non-socket portions having a wall consisting of a cured reinforced resin molding material.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |