Process for the manufacture of a perforated nickel frame by electroforming
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 3, 1990
Grant Date -
N/A
app pub date -
May 1, 1989
filing date -
May 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to the production by electroforming of perforated frames used especially to form flat or cylindrical printing frames. According to the invention, the procedure is in two stages, with two separate electrochemical baths, the second bath comprising a pyridinium compound of general formula: ##STR1## in which: R is an optionally substituted alkyl chain, R' is a hydrogen atom or a substituent group in any position relative to the nitrogen atom of the pyridinium nucleus.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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