US3594268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated cellulosic laminates and intermediates therefor
Assignee: Monsanto Co
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Filing: 1968-06-21
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Granted: 1971-07-20
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Expires: 1988-06-21
Abstract
Abstract IMPREGNATED CELLULOSIC SHEETS AND LAMINATES WHICH ARE COLD PUNCHABLE AND HAVE GOOD ELECTRICAL PROPERTIES. SUCH CONSTRUCTIONS ARE PREPARED FROM CELLULOSIC SUBSTRATES IMPREGNATED WITH A MIXTURE OF CARBOXYLATED ALKADIENE INTERPOLYMER AND A LOW MOLECULAR WEIGHT PHENOLFORMALDEHYDE RESIN AND THEN OVER TREATED WITH A CERTAIN HIGHER MOLECULAR WEIGHT SUBSTITUTED PHENOL-FORMALDEHYDE RESIN. LAMINATES ARE MADE FROM THE RESULTING SHEET-LIKE MEMBERS BY FIRST ADVANCING SAME AND THEN LAYING UP AND THERMOSETTING UNDER HEAT AND PRESSURE.
Inventors
- 👤 Ronald H Dahms
- 👤 George J Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:17
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B3/185; H01B3/36; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31877; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2762; Y10T442/277; Y10T442/2828; Y10T442/2836; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3569; Y10T442/3577; Y10T442/60; Y10T442/659
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |