Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1979-09-26
1981-03-10
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428332, 428337, 428422, 427304, 204 38B, B32B 2700
Patent
active
042554810
ABSTRACT:
A mask for selectively transmitting therethrough a desired light radiant energy is disclosed. The mask comprises a stress-relieved, essentially dimensionally stable base, comprising a copolymer of tetrafluoroethylene and hexafluoropropylene, which is capable of transmitting therethrough the light radiant energy. A blocking film is deposited on at least a portion of the base for blocking the transmission of the light radiant energy through the portion of the base.
REFERENCES:
patent: Re29015 (1976-10-01), De Angelo et al.
patent: 3772056 (1973-11-01), Polichette et al.
patent: 3772078 (1973-11-01), Polichette et al.
patent: 3892900 (1975-07-01), Shima et al.
patent: 3907621 (1975-09-01), Polichette et al.
patent: 3925578 (1975-12-01), Polichette et al.
patent: 3930963 (1976-01-01), Polichette et al.
patent: 3988256 (1976-10-01), Vandermey et al.
Dinella Donald
Wong Ching-Ping
Herbert, Jr. Thomas J.
Spivak J. F.
Western Electric Company Inc.
LandOfFree
Mask for selectively transmitting therethrough a desired light r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mask for selectively transmitting therethrough a desired light r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mask for selectively transmitting therethrough a desired light r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1294600