US4587160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatically conductive premold coating
Assignee: Vibrantz Corp
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Filing: 1985-04-08
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Granted: 1986-05-06
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Expires: 2005-04-08
Abstract
Abstract Resin is mixed with graphite particles to form a blendable, processable premold coating. When the premold coating is incorporated onto the surface of a premold coated molded plastic product produced by the premold process, said coating is rendered electrostatically conductive.
Inventors
- 👤 Charles F. Williams
- 👤 Atam P. Sahni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:29
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; B; B29; B29C; B29C37/00; B29C37/0025; B29C37/0028; B29C37/0032; B29C70/00; B29C70/88; B29C70/887; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; B29C2037/0039; B29K; B29K2707/00; B29K2707/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2982; Y10T428/2991; Y10T428/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A molded plastic part having a surface comprising a premold conductive coating containing dispersed therethroughout graphite in the form of flake with a particle size of a maximum of at least about 5 microns up to 80 microns, or a mixture of graphite flake and fiber, wherein the flake is within the foregoing particle size range and the fiber is about 300 microns in length, and wherein the percent by weight of the total graphite in the coating is within the range of about 5% to about 30% by weight.
Claim 2
Dependent Claim
90 words
A molded plastic part having a surface comprising a premold conductive coating containing dispersed therethroughout graphite in the form of flake with a particle size of a maximum of at least about 5 microns up to 80 microns, or a mixture of graphite flake and fiber, wherein the flake is within the foregoing particle size range and the fiber is about 300 microns in length, and wherein the percent by weight of the total graphite in the coating is within the range of about 5% to about 30% by weight.
Claim 3
Dependent Claim
19 words
A molded plastic part as in claim 1 and wherein the percent by weight of graphite is about 23%.
Claim 4
Dependent Claim
19 words
A molded plastic part as in claim 1 wherein the percent by weight of graphite flake is about 15%.
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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |