US3577277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer coating
Assignee: FERROXCUBE CORP Inc
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Filing: 1968-12-26
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Granted: 1971-05-04
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Expires: 1988-12-26
Abstract
Abstract A POST TREATMENT PROCESS OF IMPROVING THE CHARACTERISTICS OF POLY P-(XYLYLENE) COATED FERRITE ARTICLES BY HEATING THE ARTICLE TO AT OR JUST ABOVE THE MELTING POINT OF THE POLYMER AND MAINTAINING THE TEMPERATURE FOR A SPECIFIED DURATION.
Inventors
- 👤 Robert D Fisher
- 👤 James A Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/005; C; C08; C08G; C08G61/00; C08G61/02; C08G61/025; C08G2261/00; C08G2261/30; C08G2261/34; C08G2261/342; C08G2261/3424; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |