US3284412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of the preparation of stable aldehyde polymers
Assignee: FAIDAN HOJIN NIHON KAGAKU SENI
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Filing: 1963-01-21
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Granted: 1966-11-08
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Furukawa Junji
- 👤 Saegusa Takeo
- 👤 Ohta Shigeyasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:14
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/08; C08G2/12; C08G2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD FOR PRODUCING THERMALLY STABLE POLYMERS OF ALIPHATIC ALDEHYDES HAVING FROM TWO TO FOUR CARBON ATOMS INCLUDING POLYMERIZING SAID ALIPAHTIC ALDEHYDE IN THE PRESENCE OF AN ETHYLENICALLY UNSATURATED HYDROCARBON HAVING FROM TWO TO EIGHT CARBON ATOMS AND A CATALYST SYSTEM CONSISTING OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANOMETALLIC COMPOUNDS OF LITHIUM, SODIUM, MAGNESIUM, ZINC AND MERCURY, HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
65 words
A METHOD FOR PRODUCING THERMALLY STABLE POLYMERS OF ALIPHATIC ALDEHYDES HAVING FROM TWO TO FOUR CARBON ATOMS INCLUDING POLYMERIZING SAID ALIPAHTIC ALDEHYDE IN THE PRESENCE OF AN ETHYLENICALLY UNSATURATED HYDROCARBON HAVING FROM TWO TO EIGHT CARBON ATOMS AND A CATALYST SYSTEM CONSISTING OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANOMETALLIC COMPOUNDS OF LITHIUM, SODIUM, MAGNESIUM, ZINC AND MERCURY, HAVING THE GENERAL FORMULA
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |