Patent US3728427A successfully refreshed from Google Patents.
US3728427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive resinous structural material and method for its preparation
Assignee: ATK Launch Systems LLC
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Filing: 1970-11-17
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Granted: 1973-04-17
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Expires: 1990-11-17
Abstract
Abstract A structural material having an electrically conductive surface is presented along with a method for its preparation. The material is particularly useful wherever it is desirable to eliminate the danger of electro-static sparks or other electrical conduction along the material''s surface. The material is resinous in character, can be reinforced, and is prepared by coating a mandrel with a resinous gel, depositing conductive metal slivers, flakes or needles upon it before it cures, applying glass cloth, applying pressure to the cloth, slivers and gel while the gel cures to force the slivers to the surface against mandrel and then removing the material from the mandrel after it has cured.
Inventors
- 👤 C Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:18
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/88; B29C70/882; B29C70/02; B29C70/021; B29C70/025; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2705/00; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2023/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
19 words
The invention set forth in claim 1 with the electrically conductive material comprising particles in the form of needles.
Claim 2
Dependent Claim
15 words
The invention set forth in claim 2 with the particles in the form of slivers.
Claim 3
Dependent Claim
15 words
The invention set forth in claim 2 with the particles in the form of flakes.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |