Donor material for carbonless copying
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 4, 1980
Grant Date -
N/A
app pub date -
Sep 13, 1978
filing date -
Sep 29, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a donor material for carbonless copying which mainly consists of a carrier sheet and a multiplicity of frangible microcapsules containing a suitable dye precursor in a liquid medium and secured to one face of the sheet, spacer particles of soybean protein are interspersed in a relatively small amount between the microcapsules and project beyond the microcapsules away from the carrier sheet to protect the microcapsules against premature fracture.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully