US4789868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of parabolic antennas
Assignee: Toyo Kasei Kogyo Co Ltd
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Filing: 1986-11-06
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Granted: 1988-12-06
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Expires: 2006-11-06
Abstract
Abstract Plastic-made parabola antennas are improved to get more wave gain in the process of manufacture thereof where a wave reflector material is embedded in other molding materials so as not to cause dislocation thereof during thermoset-molding.
Inventors
- 👤 Susumu Oono
- 👤 Mitsuru Kawata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:58
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/88; B29C70/882; H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/141; H01Q15/142; B29C70/28; B29C70/30; B29C70/34; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/0854; B29K2105/20; B29K2105/206; B29K2705/00; B29K2707/00; B29K2707/04; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2031/00; B29L2031/34; B29L2031/3456
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, and a support portion, said reflective layer being formed closely adjacent said parabolic front surface.
Claim 2
Dependent Claim
55 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, and a support portion, said reflective layer being formed closely adjacent said parabolic front surface.
Claim 3
Dependent Claim
26 words
A plastic-made parabolic antenna as recited in claim 1, further comprising a layer of buffer material laminated between said front surface layer and said reflective layer.
Claim 4
Dependent Claim
25 words
A plastic-made parabolic antenna as recited in claim 1, further comprising a layer of buffer material laminated between said reflective layer and said support portion.
Claim 5
Dependent Claim
30 words
A plastic-made parabolic antenna as recited in claim 1, further comprising layers of buffer material laminated between said reflective layer and both said front surface layer and said support portion.
Claim 6
Dependent Claim
74 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, a buffer layer and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said buffer layer being of buffer material laminated between said reflective layer and said support portion.
Claim 7
Dependent Claim
74 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, a buffer layer and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said buffer layer being of buffer material laminated between said reflective layer and said support portion.
Claim 8
Dependent Claim
79 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, buffer layers and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said buffer layers being of buffer material laminated between said reflective layer and both said front surface layer and said support portion.
Claim 9
Dependent Claim
79 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, buffer layers and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said buffer layers being of buffer material laminated between said reflective layer and both said front surface layer and said support portion.
Claim 10
Dependent Claim
78 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said thermosetting gel, reflective layer and support portion being piled uncured in layers in a mold and cured in one step under pressure.
Claim 11
Dependent Claim
78 words
A plastic-made parabolic antenna formed as a molded laminated article having a concave parabolic front surface, said article comprising a front surface layer of thermosetting gel, a reflective layer of metal-coated chopped glass fiber material embedded in a thermosetting resin, and a support portion, said reflective layer being formed closely adjacent said parabolic front surface, said thermosetting gel, reflective layer and support portion being piled uncured in layers in a mold and cured in one step under pressure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |