Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Reexamination Certificate
2007-10-09
2007-10-09
Crispino, Richard (Department: 1733)
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
Reexamination Certificate
active
10942663
ABSTRACT:
The present invention relates to a process for the continuous production of polyurethane sandwich elements comprising an upper outer layer and a lower outer layer and a layer of cellular polyurethane lying in between, which is firmly bonded to the outer layers. This invention also relates to an apparatus suitable for the production of polyurethane sandwich elements as described above.
REFERENCES:
patent: 3174887 (1965-03-01), Voelker
patent: 3341638 (1967-09-01), Helmut
patent: 3793122 (1974-02-01), Sullhofer
patent: 4035529 (1977-07-01), Meisert et al.
patent: 4264291 (1981-04-01), Hoffman et al.
patent: 4925719 (1990-05-01), Staneluis et al.
patent: 5856371 (1999-01-01), Grimm et al.
patent: 6042765 (2000-03-01), Sugahara et al.
patent: RE36674 (2000-04-01), Gluck et al.
patent: 6228296 (2001-05-01), Cartmill et al.
patent: 1 167 520 (1964-04-01), None
patent: 23 30 678 (1975-01-01), None
patent: 197 27 129 (1999-01-01), None
patent: 940 249 (1999-09-01), None
patent: 2003281 (1969-11-01), None
patent: 1 369 641 (1974-10-01), None
patent: 00/03858 (2000-01-01), None
Patent Abstracts of Japan Bd. 0071, Nr. 73 (M-232), Jul. 30, 1983 & JP 58 076239 A (Matsushita Denko KK), May 9, 1983 (Jul. 30, 1983).
Gellhorn Van E: “Sandwich Structure Success Depends on Process Conformity with Requirements” Composites Manufacturing, Butterworth Scientific, Guildford, Surrey, GB, Bd. 3, Nr. 3, Jan. 1992, Seiten 183-188, XP000349832.
Begemann Michael
Raffel Reiner
Wirth Jürgen
Brown N. Denise
Crispino Richard
Hennecke GmbH
Musser Barbara J.
Whalen Lyndanne M.
LandOfFree
Apparatus for the production of polyurethane sandwich elements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for the production of polyurethane sandwich elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for the production of polyurethane sandwich elements will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3827302