US4366093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical molded catalyst
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1981-03-31
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Granted: 1982-12-28
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Expires: 2001-03-31
Abstract
Abstract A cylindrical molded catalyst suitable for use in fixed bed reaction having a particular size of 3 to 6 mm. in outer diameter of the circle, at least 1.0 mm. in inner diameter of the circle, at most 1.5 mm. in wall thickness and 3 to 6 mm. in height. The molded catalyst has small resistance to fluid, large effective surface area, good heat conductivity and sufficient mechanical strength, and can produce excellent conversion and selectivity.
Inventors
- 👤 Ken Shiozaki
- 👤 Kazunori Tsuge
- 👤 Akira Ohnishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:40
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/122; B01J35/00; B01J35/50; B01J35/55; C; C07; C07C; C07C17/00; C07C17/093; C07C17/15; C07C17/152; C07C17/156; B01J23/00; B01J23/70; B01J23/76; B01J23/78
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A molded catalyst having a cylindrical shape, the outer diameter of the circle being from 3 to 6 mm., the inner diameter of the circle being at least 1.0 mm., the thickness of the wall being at most 1.5 mm. and the height being from 3 to 6 mm.
Claim 2
Dependent Claim
49 words
A molded catalyst having a cylindrical shape, the outer diameter of the circle being from 3 to 6 mm., the inner diameter of the circle being at least 1.0 mm., the thickness of the wall being at most 1.5 mm. and the height being from 3 to 6 mm.
Claim 3
Dependent Claim
42 words
The molded catalyst of claim 1, wherein the outer diameter is from 4 to 5 mm., the inner diameter is from 1.5 to 2.5 mm., the thickness is from 1.0 to 1.5 mm. and the height is from 3 to 6 mm.
Claim 4
Dependent Claim
19 words
The molded catalyst of claim 1, wherein the catalyst is one prepared by using a compression type tabletting machine.
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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |