US4917309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for micronizing solid matter in jet mills
Assignee: Kerr-Mcgee Pigments & Co KG GmbH
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Filing: 1989-03-30
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Granted: 1990-04-17
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Expires: 2009-03-30
Abstract
Abstract A process for micronizing solid matters in a jet mill, wherein the solid matters are brought into the jet mill across an injector and wherein the micronization takes place, if necessary, in the presence of milling aids and/or dispersing agents, wherein the solid matters are forcibly supplied to the injector and an apparatus for carrying out the process, the apparatus comprising a dosing means, a forcible entry means, and injector and a jet mill.
Inventors
- 👤 Hans-Gunter Zander
- 👤 Horst Bornefeld
- 👤 Bernd-Michael Holle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:15
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A process for micronizing solid matters in a jet mill comprising introducing the solid matters in a jet mill across an injector, wherein the solid matters forcibly, pressure sluiced and pneumatically supplied so as to have only one degree of freedom of movement by a pneumatic delivery device to the injector.
Claim 2
Dependent Claim
51 words
A process for micronizing solid matters in a jet mill comprising introducing the solid matters in a jet mill across an injector, wherein the solid matters forcibly, pressure sluiced and pneumatically supplied so as to have only one degree of freedom of movement by a pneumatic delivery device to the injector.
Claim 3
Dependent Claim
22 words
A process according to claim 1, which further comprises the micronizing taking place in the presence of milling aids and/or dispersing agents.
Claim 4
Dependent Claim
19 words
A process according to claim 1, wherein the solid matters are brought into the pneumatic delivery device without recoil.
Claim 5
Dependent Claim
17 words
A process according to claim 1, wherein the introduction of the solid matters occurs in even dosages.
Claim 6
Dependent Claim
25 words
A process according to claim 1, wherein the injector comprises a steam line, a jet nozzle, a solid matter/steam/air mixing pipe and a collecting nozzle.
References Cited (Backward Citations)
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US2515541A
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US2636688A
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US2628786A
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US3815833A
Cited
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Cited
US4502641A
Cited
US4504017A
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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) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |