Coating processes – Electrical product produced – Carbon coating
Patent
1974-09-17
1976-04-20
Weiffenbach, Cameron K.
Coating processes
Electrical product produced
Carbon coating
427123, 427264, 427266, 427269, 427270, 427331, B05D 512
Patent
active
039521168
ABSTRACT:
A process for forming an electrical resistance heater on a metal substrate. At least one layer of a composition of a polyamic acid or polyamide-imide polymer and a solvent therefor is applied to a surface of the substrate. The substrate and layer are heated to remove the solvent and to effect only partial curing of the polymer thereby to form a partially cured insulating layer. A composition of a mixture of a polyamic acid or polyamide-imide polymer, a solvent therefor and flakes of an electrical conductivity-modifying material is applied to the insulating layer thereby to form an overlying layer having an electrical conductivity substantially greater then that of the insulating layer. The substrate, insulating layer and overlying layer are thereafter heated for a period of time and at a temperature sufficient to at least partially cure the overlying layer.
REFERENCES:
patent: 3444183 (1969-05-01), Hubbuch
patent: 3563916 (1971-02-01), Takasbina et al.
patent: 3565694 (1971-02-01), Chireau
patent: 3779807 (1973-12-01), Taylor et al.
patent: 3790530 (1974-02-01), Koerner et al.
patent: 3852106 (1974-12-01), Incremona
Stoeckler Hans A.
Trenkler George
Baumann Russell E.
Haug John A.
McAndrews James P.
Texas Instruments Incorporated
Weiffenbach Cameron K.
LandOfFree
Process for forming electrical resistance heaters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for forming electrical resistance heaters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for forming electrical resistance heaters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1588518