US3470238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering acrylic and methacrylic ester
Assignee: Mitsubishi Chemical Corp
•
Filing: 1965-11-03
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Granted: 1969-09-30
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Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Taisuke Asano
- 👤 Mamoru Nakano
- 👤 Yasuhiro Sato
- 👤 Takashi Shimodaira
- 👤 Keiko Kamata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:18
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C07C51/493; C07C51/48; C07C67/00; C07C67/08
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |