The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7255817 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 14, 2007

Filed:

Jan. 31, 2005
Applicants:

Kazuharu Tazawa, Mie, JP;

Atsuhisa Maeda, Mie, JP;

Inventors:

Kazuharu Tazawa, Mie, JP;

Atsuhisa Maeda, Mie, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 43/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for compression molding a cylindrical tablet is presented, the method being capable of preventing the occurrence of cracks and the breakage of core punches. The method for compression molding a cylindrical tablet is achieved by using a rotary powder compression molding machine provided with a die and upper and lower punches fitted to a rotary table and a core punch penetrating the punch end of a lower punch. The compression molding method being characterized by using the core punch in which the difference between the smallest diameter of the core punch at the protion for forming the center opening of the cylindrical tablet and the reference diameter of the portion in design is within 0.04 mm.


Find Patent Forward Citations

Tazawa, Kazuharu. (2007). Method for compression-molding a cylindrical tablet (U.S. Patent No. 7255817). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7255817

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