US3224689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colloid mills
Assignee: CHEMICOLLOID LAB Inc
•
Filing: 1962-05-25
•
Granted: 1965-12-21
•
Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Walter A Behrens
- 👤 David F O'keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:39
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/175; B02C2/00; B02C2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A COLLOID MILL, A HOUSING HAVING A SUPPORT CHAMBER AND A MILLING CHAMBER, A STATOR IN THE MILLING CHAMBER, A SINGLE CONTINUOUS SHAFT EXTENDING FROM END TO END THROUGH THE HOUSING, A ROTOR FOR THE MILL MOUNTED ON THE SHAFT IN THE MILLING CHAMBER IN MILLING RELATIONSHIP TO THE STATOR, A SLEEVE IN THE SUPPORT CHAMBER, A PLURALITY OF BEARING MEANS PROVIDING THE SOLE SUPPORT FOR THE SHAFT, CERTAIN OF THE BEARING MEANS BEING POSITIONED IN THE SUP-
Claim 2
Dependent Claim
79 words
IN A COLLOID MILL, A HOUSING HAVING A SUPPORT CHAMBER AND A MILLING CHAMBER, A STATOR IN THE MILLING CHAMBER, A SINGLE CONTINUOUS SHAFT EXTENDING FROM END TO END THROUGH THE HOUSING, A ROTOR FOR THE MILL MOUNTED ON THE SHAFT IN THE MILLING CHAMBER IN MILLING RELATIONSHIP TO THE STATOR, A SLEEVE IN THE SUPPORT CHAMBER, A PLURALITY OF BEARING MEANS PROVIDING THE SOLE SUPPORT FOR THE SHAFT, CERTAIN OF THE BEARING MEANS BEING POSITIONED IN THE SUP-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |