Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Qualitz; Marion
Address:
Hilden, DE
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4379721 Pressure sensitive recording materials April 12, 1983
The present invention relates to a pressure-sensitive recording material ing improved storability, lightfastness and heat resistance, which comprises a unit containing a dye precursor or its solution and a unit containing a dye acceptor material which is capable of color formation by










 
 
  Recently Added Patents
Engine RPM control device
Para-xylylene based microfilm elution devices
Semiconductor device including insulating layer of cubic system or tetragonal system
Phase-amplitude 3-D stereo encoder and decoder
Matching a usage history to a new cloud
Polyamide compositions
Internal wiring structure of semiconductor device
  Randomly Featured Patents
Head light for motorcycle
Power management method for handheld electronic device using G-sensor
Food package
Active filter circuit
Method and apparatus for character reading
Sliding door with lateral sealing movement
Chip testing circuit
Image sensor and image reading apparatus
Slide out rack for ovens and the like
Amino substituted pyrazine derivatives for the treatment of pain