Patent US3513112A successfully refreshed from Google Patents.
US3513112A
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US
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Process for producing multicellular synthetic resin structures
Assignee: Sekisui Chemical Co Ltd
•
Filing: 1963-07-09
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Granted: 1970-05-19
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Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Masanori Kanai
- 👤 Norio Sagane
- 👤 Isao Kaetsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08F; C08F20/00; C08F20/62; C08J2333/00; Y; Y10; Y10S; Y10S521/00; Y10S521/916
Claims Analysis
Total Claims: 0
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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) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |