Patent US2660573A successfully refreshed from Google Patents.
US2660573A
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Synthetic resin and method of making the same from furacrolein, furfural, and formaldehyde
Assignee: Electro Chemical Engineering &
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Filing: 1951-03-29
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Granted: 1953-11-24
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Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Willard J Lantz
- 👤 Joseph M Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:56
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C08G2/20; C08G6/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T442/00; Y10T442/20; Y10T442/2549; Y10T442/2566
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AS A NOVEL RESIN THE CONDENSATION PRODUCT OF FURACROLEIN, FURFURAL AND FORMALDEHYDE, THE MOL RATIO OF FURACROLEIN TO FURFURAL BEING BETWEEN ABOUT 1 TO 1 AND ABOUT 10 TO 1, AND THE MOL RATIO OF FURACROLEIN PLUS FURFURAL TO FORMALDEHYDE BEING BETWEEN ABOUT 0.5 TO 1 AND ABOUT 1.6 TO 1.
Claim 2
Dependent Claim
51 words
AS A NOVEL RESIN THE CONDENSATION PRODUCT OF FURACROLEIN, FURFURAL AND FORMALDEHYDE, THE MOL RATIO OF FURACROLEIN TO FURFURAL BEING BETWEEN ABOUT 1 TO 1 AND ABOUT 10 TO 1, AND THE MOL RATIO OF FURACROLEIN PLUS FURFURAL TO FORMALDEHYDE BEING BETWEEN ABOUT 0.5 TO 1 AND ABOUT 1.6 TO 1.
References Cited (Backward Citations)
US2363829A
Cited
US2527714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |