US3830894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of filled phenol resin foam materials
Assignee: Individual
•
Filing: 1971-09-16
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Granted: 1974-08-20
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Expires: 1991-09-16
Abstract
Abstract THIS PRESENT DISCLOSURE CONCERNS FILLED PHENOL RESIN FOAM MATERIALS, AS WELL AS A PROCESS FOR THE PREPARATION OF FILLED PHENOL RESIN FOAM MATERIALS CONTAINING A SKELETON-LIKE MASS OF PARTICULATE FILLER MATERIAL SUITABLE AS A HOMOGENEOUS CONTRUCTION MATERIALS WHEREIN THE INTERSPACES BETWEEN THE FILLER ARE FILLED WITH THE PHENOLIC RESIN FOAM.
Inventors
- 👤 H Juenger
- 👤 F Weissenfels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:30
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/0066; C08J9/0085; C08K; C08K7/00; C08K7/02; C08K7/16; C08K7/22; C08J2361/00; C08J2361/04; C08J2361/06; Y; Y10; Y10S; Y10S264/00; Y10S264/06; Y10S264/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |