Patent EP0112450A1 successfully refreshed from Google Patents.
US3342873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxymethylated diaromatic ethers and condensation products thereof
Assignee: Dow Chemical Co
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Filing: 1961-05-01
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Granted: 1967-09-19
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 James D Doedens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A COMPOSITION OF MATTER HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
A COMPOSITION OF MATTER HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
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Cited
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Cited
FR1204466A
Cited
GB956335A
Cited
US3170959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |