US3713593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine media milling process
Assignee: BASF Catalysts LLC
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Filing: 1970-08-11
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Granted: 1973-01-30
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Expires: 1990-08-11
Abstract
Abstract The invention relates to a process for the fine media milling of microorganisms or crystalline organic materials. In our process, a liquid dispersion of a microorganism or crystalline organic material is agitated in the presence of grinding media.
Inventors
- 👤 H Morris
- 👤 Mahan J Mc
- 👤 W Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/06; C12N1/066; B; B02; B02C; B02C17/00; B02C17/16; B02C19/00; B02C19/0056
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
Process for comminuting a crystalline organic solid material to particles having a diameter of between 1 and 3 microns which comprises subjecting a liquid mixture of a crystalline organic solid material of a particle size larger than 3 microns in diameter to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 2
Dependent Claim
67 words
Process for comminuting a crystalline organic solid material to particles having a diameter of between 1 and 3 microns which comprises subjecting a liquid mixture of a crystalline organic solid material of a particle size larger than 3 microns in diameter to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 3
Dependent Claim
71 words
Process for comminuting crystalline procaine penicillin G particles having a diameter greater than 3 microns to particles having a diameter of between 1 and 3 microns which comprises subjecting a liquid mixture of crystalline procaine penicillin G particles having a diameter greater than 3 microns to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 4
Dependent Claim
71 words
Process for comminuting crystalline procaine penicillin G particles having a diameter greater than 3 microns to particles having a diameter of between 1 and 3 microns which comprises subjecting a liquid mixture of crystalline procaine penicillin G particles having a diameter greater than 3 microns to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 5
Dependent Claim
18 words
Process according to claim 2 wherein the comminuted particles have a diameter of between 2 and 3 microns.
Claim 6
Dependent Claim
25 words
Process according to claim 2 wherein the grinding media is smaller than 0.15 inch in overall diameter and larger than 200 mesh in overall diameter.
Claim 7
Dependent Claim
78 words
Process for comminuting crystalline procaine penicillin G particles having a diameter greater than 3 microns to particles which are equant in shape and which have a diameter of between 1 and 3 microns, which comprises subjecting a liquid mixture of crystalline procaine penicillin G particles having a diameter greater than 3 microns to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 8
Dependent Claim
78 words
Process for comminuting crystalline procaine penicillin G particles having a diameter greater than 3 microns to particles which are equant in shape and which have a diameter of between 1 and 3 microns, which comprises subjecting a liquid mixture of crystalline procaine penicillin G particles having a diameter greater than 3 microns to an agitation in the presence of plastic grinding media, said grinding media being smaller than one-quarter inch in overall diameter and larger than 400 mesh.
Claim 9
Dependent Claim
18 words
Process according to claim 5 wherein the comminuted particles have a diameter of between 2 and 3 microns.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |