Process and press for the production of tablets

Details Process and press for the production of tablets Process and press for the production of tablets

2005-03-01

2005-03-01

Lechert, Jr., Stephen J. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

C264S119000, C264S120000, C425S355000, C425S422000

Reexamination Certificate

active

06861022

ABSTRACT:
A process for the production of tablets with a cavity using a press, equipped with upper and lower punches, the lower punch comprising a ring portion being able to reciprocate, characterized in that a central member is provided within the ring portion of the lower punch, this central member being fixed in a pre-determined position beneath the upper part of the die during the process and that, at some stage before the first compression step, the ring portion of the lower punch is adjusted at a position beneath the level of the upper end of the central member.

REFERENCES:
patent: 5417903 (1995-05-01), Harrison et al.
patent: 5616552 (1997-04-01), Yoshihara et al.
patent: 910 629 (1954-05-01), None
patent: 35 07 222 (1986-08-01), None
patent: 1585699 (1977-12-01), None
patent: 6218586 (1994-08-01), None
patent: 8332596 (1996-12-01), None
patent: WO 0010800 (2000-03-01), None
PCT International Search Report for PCT/GB01/02026.
GB Search Report Search Report for GB 0011382.9 dated Nov. 14, 2000.

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