Methods of manufacturing substrates

Details Methods of manufacturing substrates Methods of manufacturing substrates

2007-02-20

2007-02-20

Hassanzadeh, Parviz (Department: 1763)

Etching a substrate: processes

Forming or treating article containing a liquid crystal...

C283S083000

Reexamination Certificate

active

10502097

ABSTRACT:
The present invention relates to improvements in methods of manufacture of substrates which can be used in varying shapes and sizes for various authenticating or security applications, which combine the advantages of indicia formed from metallisation or demetallisation of a security element and the colorshift effects of liquid crystal materials. The invention therefore provides a method of manufacturing a substrate comprising the steps of applying a darkly colored resist to at least a part of a metallic layer on one side of a substantially transparent polymeric film, removing metal from areas not covered by the resist to form demetallised regions and applying a polymeric liquid crystal material over the resist and the demetallised regions.

REFERENCES:
patent: 4943093 (1990-07-01), Melling et al.
patent: 5678863 (1997-10-01), Knight et al.
patent: 6052137 (2000-04-01), Shimada
patent: 6318758 (2001-11-01), Stenzel et al.
patent: 2003/0012935 (2003-01-01), Kuntz et al.
patent: 0911758 (1999-04-01), None
patent: 0039391 (2000-07-01), None
Title page to WO 00/72056, dated May 2000, of Gocho et al. entitled “Laminated Composite Body, Information Recording Medium . . . ”

Affiliated with

Also associated with

Rating

Methods of manufacturing substrates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods of manufacturing substrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of manufacturing substrates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3881283