Patent US3507675A successfully refreshed from Google Patents.
US3507675A
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US
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Method of manufacturing a supple,vapor- and moisture-permeable sheet material
Assignee: Kuraray Co Ltd
•
Filing: 1968-07-02
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Granted: 1970-04-21
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Expires: 1988-07-02
Abstract
No abstract record available.
Inventors
- 👤 Kazuo Noda
- 👤 Kazuo Nagoshi
- 👤 Osamu Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:41
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06C; D06C3/00; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06N3/0056; D06N3/0061; D06C2700/00; D06C2700/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2050239A
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US3000757A
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US3067482A
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US3113886A
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US3190766A
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US3208875A
Cited
US3222208A
Cited
US3169885A
Cited
US3238055A
Cited
US3377190A
Cited
US3296016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |