US3616832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber articles reinforced with filaments
Assignee: Teijin Ltd
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Filing: 1969-12-22
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Granted: 1971-11-02
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Expires: 1989-12-22
Abstract
Abstract A rubber article, especially a tyre and a belt, reinforced with the filaments of a substantially linear polyester consisting essentially of ethylene naphthalene-2,6-dicarboxylate recurring units and having an intrinsic viscosity of at least 0.5 and a concentration of carboxyl groups of less than 60 equivalents per million grams of the polymer.
Inventors
- 👤 Takeo Shima
- 👤 Masao Yoshimura
- 👤 Takatoshi Kuratsuji
- 👤 Iwao Fujimoto
- 👤 Yukio Kato
- 👤 Seiichi Yamashiro
- 👤 Kenji Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:17
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/0042; B29; B29D; B29D29/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |