US3515656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization process for hydroxy alkyl acrylates
Assignee: Mitsubishi Gas Chemical Co Inc
•
Filing: 1966-07-15
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Granted: 1970-06-02
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Expires: 1986-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ching Yun Huang
- 👤 Katsuo Sato
- 👤 Masuya Ikegami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:17
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22; C08F20/26; C08F20/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3172868A
Cited
US3219640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |