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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Class Information
Number: 493/240
Name: Manufacturing container or tube from paper; or other manufacturing from a sheet or web > Container making > Pliable container (e.g., bag, envelope, etc.) > Including form-scoring
Description: Method or apparatus including (a) pressing a line in one surface of a workpiece and thereby raising a corresponding line on the opposite surface; or, (b) pressing a line in one surface of a workpiece with no significant change in the opposite surface configuration, wherein the material of the workpiece under that line becomes more compacted, such that there is no thinning flow of the workpiece.










Sub-classes under this class:

Class Number Class Name Patents
493/242 By reciprocatory tool 7
493/241 By rotary tool 23


Patents under this class:

Patent Number Title Of Patent Date Issued
8444539 Folding score and method and apparatus for forming the same May. 21, 2013
8424859 Creasing apparatus and image forming system Apr. 23, 2013
7704201 Envelope-making aid Apr. 27, 2010
7396320 Pre-folded and pre-glued flower wrap sheets and methods for making Jul. 8, 2008
7081080 Stack of fan folded material and combinations thereof Jul. 25, 2006
6811529 Perpendicular perforation on zipper tape for air evacuation of package Nov. 2, 2004
6565499 Automatic machine for slitting and creasing paperboard sheets and the like May. 20, 2003
5569145 Method and apparatus for manufacturing a sack bottom Oct. 29, 1996
5554093 Flexible thermoplastic containers having a visual pattern thereon Sep. 10, 1996
5362299 Stamp storage envelope and method of making same Nov. 8, 1994
5205650 Tubular bag with shock absorber band tube for making such bag, and method for its production Apr. 27, 1993
5201982 Method for producing self-sealing envelopes Apr. 13, 1993
4721503 Agricultural storage bag folding apparatus and method Jan. 26, 1988
4605125 Miniature flexible magnetic disk assembly with motion limit stop Aug. 12, 1986
4273550 Method for producing a flat bottom plastic bag Jun. 16, 1981
4134322 Use of microencapsulated glue in the manufacture of envelopes Jan. 16, 1979
4079662 Bag making machine Mar. 21, 1978
4011798 Method of making shipping bag Mar. 15, 1977











 
 
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