Plastic article or earthenware shaping or treating: apparatus – Dipping type shaping means – Dipping form per se
Reexamination Certificate
2005-10-11
2005-10-11
Staicovici, Stefan (Department: 1732)
Plastic article or earthenware shaping or treating: apparatus
Dipping type shaping means
Dipping form per se
C249S052000, C264S302000, C264S303000, C264S305000, C264SDIG060
Reexamination Certificate
active
06953332
ABSTRACT:
Improved dip coating methods and mandrels for forming polymer leaflets and valve prostheses generally involve one or more features on the mandrel that facilitate the processing. The mandrel has a top surface and an outer surface comprising a plurality of ridges and contoured surfaces extending to the ridges. An edge on the mandrel separates the top surface and the contoured surfaces, with the mandrel edge corresponding to the free edge of the leaflet. In preferred embodiments, the edge separating the top surface from the contoured surfaces is sharp. The polymer formed on the top surface can be efficiently separated from the remaining portions of the polymer structure to form the free edges of the leaflets.
REFERENCES:
patent: 3717883 (1973-02-01), Mosher
patent: 4135867 (1979-01-01), Stockum
patent: 4222126 (1980-09-01), Boretos et al.
patent: 4265694 (1981-05-01), Boretos et al.
patent: 4364127 (1982-12-01), Pierce et al.
patent: 4417360 (1983-11-01), Moasser
patent: 4556996 (1985-12-01), Wallace
patent: 4731074 (1988-03-01), Rousseau et al.
patent: 4778461 (1988-10-01), Pietsch et al.
patent: 4888009 (1989-12-01), Lederman et al.
patent: 5116564 (1992-05-01), Jansen et al.
patent: 5139515 (1992-08-01), Robicsek
patent: 5376113 (1994-12-01), Jansen et al.
patent: 5562729 (1996-10-01), Purdy et al.
patent: 5728340 (1998-03-01), Dreibelbis et al.
patent: 6139575 (2000-10-01), Shu et al.
patent: 6171335 (2001-01-01), Wheatley et al.
patent: 6174331 (2001-01-01), Moe et al.
patent: 0 331 345 (1989-09-01), None
patent: 0 850 607 (1989-09-01), None
patent: 0 632 711 (1997-12-01), None
patent: 1008349 (1999-08-01), None
patent: SU 316446 (1971-10-01), None
patent: SU 1144216 (1987-10-01), None
patent: WO9832400 (1998-07-01), None
patent: WO 01/05334 (2001-01-01), None
Cai Chad Q.
Kruse Steven D.
Kurk James L.
Woo Yi-Ren
St. Jude Medical Inc.
Staicovici Stefan
Westman, Champlin and Kelly, P.A.
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