US3560447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming elastomeric particles and particles produced thereby
Assignee: 3M Co
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Filing: 1967-12-08
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Granted: 1971-02-02
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Expires: 1987-12-08
Abstract
Abstract SUBSTANTIALLY INFUSIBLE AND INSOLUBLE ELASTOMERIC PARTICLES BETWEEN 3 TO 120 MICRONS IN SIZE ARE FORMED BY SHEARING LIQUID PRECURSOR MATERIAL IN A LIQUID MEDIUM THAT PROVIDES CONDITIONS EFFECTIVE TO CONVERT THE PARTICLES TO THE CURED FORM; IN A SPECIFIC EMBODIMENT POLYURETHANE PARTICLES ARE FORMED IN AN AQUEOUS MEDIUM. ONE USE FOR THE PARTICLES IS AS A FLATTING AGENT IN A PAINT COMPOSITION.
Inventors
- 👤 Wallace Karl Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |