US3737398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a polyvinyl acetal sponge buff
Assignee: Individual
•
Filing: 1970-11-04
•
Granted: 1973-06-05
•
Expires: 1990-11-04
Abstract
Abstract A SPONGEE BUFF SUITABLE FOR USE IN POLISHING OR FINISHING SURFACES OF STAINLESS STEELS, ALUMINUM AND OTHER METALS IS MADE BY REACTING POLYVINYL ALCOHOL WITH A LOWER ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE AND BUTYRALDEHYDE, AND DIALDEHYDE STARCH AT A PH OF AT LEAST 1 IN THE PRESENCE OF AN ACIDIC CATALYST, SUITABLE FOAMING AGENT AND 20-70% BY WEIGHT BASED ON THE REACTION MIXTURE OF HEAT RESISTANT FIBERS, AND FORMING THE REACTION PRODUCED IN ANY DESIRED FORM.
Inventors
- 👤 D Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0085; C08F; C08F8/00; C08F8/48; C08K; C08K7/00; C08K7/02; C08J2329/00; C08J2329/14
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |