Shaped trilobal particles

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter

Reexamination Certificate

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Details

C428S403000, C549S259000, CD21S486000, CD21S484000, CD21S479000

Reexamination Certificate

active

10485247

ABSTRACT:
An elongate, shaped particle having three protrusions each extending from and attached to a central position aligned along the central longitudinal axis of the particle, the cross-section of the particle occupying the area encompassed by the outer edges of six outer circles around a central circle minus the area occupied by three alternating outer circles, wherein each of the six outer circles is touching two neighbouring outer circles and wherein three alternating outer circles are equidistant to the central circle, have the same diameter, and may be attached to the central circle.

REFERENCES:
patent: 3764565 (1973-10-01), Jacobs et al.
patent: 4628001 (1986-12-01), Sasaki et al.
patent: 4975032 (1990-12-01), Arai et al.
patent: 6005121 (1999-12-01), Ebner et al.
patent: 0220933 (1987-05-01), None
patent: 4464633 (1992-01-01), None
patent: 0678331 (1995-10-01), None
patent: 1446175 (1976-08-01), None
I. Naka, et al ( J. Japan Petrol. Inst., vol. 23, No. 4, 1980, pp. 268-273), entitled: Hydrodesulphurisation Activity of Catalysts with Non-Cylindrical Shape.
International Search Reported mailed Nov. 29, 2002.

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