US5034447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1990-11-16
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Granted: 1991-07-23
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Expires: 2010-11-16
Abstract
Abstract A sliding resin composition comprising an aromatic polycarbonate resin composition (A) and zinc oxide whiskers (B) in an amount of from 1 to 40% by weight based on the total weight of the sliding resin composition. The sliding resin composition is suitably used in fields where a sliding property is required, such as a lens frame (lens tube) for cameras, gears and cams for OA machines and apparatus, etc.
Inventors
- 👤 Toshiaki Izumida
- 👤 Koujiro Matsuo
- 👤 Jun Yagi
- 👤 Sangoro Ichii
- 👤 Naoto Obayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
36 words
A sliding resin composition comprising an aromatic polycarbonate resin composition (A) and zinc oxide whiskers (B) in an amount of from 1 to 40% by weight based on the total weight of the sliding resin composition.
Claim 2
Dependent Claim
36 words
A sliding resin composition comprising an aromatic polycarbonate resin composition (A) and zinc oxide whiskers (B) in an amount of from 1 to 40% by weight based on the total weight of the sliding resin composition.
Claim 3
Dependent Claim
73 words
A sliding resin composition as claimed in claim 1, wherein said zinc oxide whiskers (B) each is roughly in a tetrapod form comprising a core and four acicular-crystal arms extending from the core in different directions, said acicular-crystal arms each having a diameter as measured at the root thereof of from 0.7 to 14 μm and a length as measured from the root to the end thereof of from 3 to 200 μm.
Claim 4
Dependent Claim
21 words
A sliding resin composition as claimed in claim 1, wherein said aromatic polycarbonate resin composition contains an inorganic or organic reinforcement.
Claim 5
Dependent Claim
18 words
A sliding resin composition as claimed in claim 3, wherein said reinforcement is glass fibers or carbon fibers.
References Cited (Backward Citations)
JPS52845A
Cited
US4097435A
Cited
JPS5927947A
Cited
US4687802A
Cited
JPH01203460A
Cited
JPH0220552A
Cited
US4960654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |