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Class Information
Number: 427/307
Name: Coating processes > With pretreatment of the base > Etching, swelling, or dissolving out part of the base
Description: Processes wherein either a portion of the base is removed by contact with a chemical agent or a solvent for the base is absorbed into the base.

Sub-classes under this class:

Class Number Class Name Patents
427/308 Cellulosic base 36
427/309 Inorganic base 450

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
4781788 Process for preparing printed circuit boards Nov. 1, 1988
4782007 Additive method for manufacturing printed circuit boards using aqueous alkaline developable and strippable photoresists Nov. 1, 1988
4780176 Method of wetting metals Oct. 25, 1988
4775557 Composition and process for conditioning the surface of polycarbonate resins prior to metal plating Oct. 4, 1988
4775449 Treatment of a polyimide surface to improve the adhesion of metal deposited thereon Oct. 4, 1988
4774122 Resinous product provided with surface coatable with metal layer bonded through an array of microdendrites and metal-clad resinous product thereof Sep. 27, 1988
4770899 Method of coating copper conductors on polyimide with a corrosion resistant metal, and module produced thereby Sep. 13, 1988
4764401 Process for activating substrate surfaces for electroless metallization Aug. 16, 1988
4756930 Process for preparing printed circuit board thru-holes Jul. 12, 1988
4753828 Color changeable earrings Jun. 28, 1988
4752505 Pre-metal deposition cleaning for bipolar semiconductors Jun. 21, 1988
4746546 Method of forming endless wire belt for paper machines or the like May. 24, 1988
4744857 Method for modifying fluoropolymer fibers May. 17, 1988
4745006 Method for coating nylon-6 for improved thermal stability May. 17, 1988
4744860 Process for making a non-polar polymeric material dyeable with an acid dye May. 17, 1988
4743496 Screens and method of making the same May. 10, 1988
4731156 Plasma processes for surface modification of fluoropolymers using ammonia Mar. 15, 1988
4724057 Process of pretreatment prior to paint coating Feb. 9, 1988
4717639 Process for preparation of a stencil or resist image Jan. 5, 1988
4708887 Method for coloring polymer-insulated wire Nov. 24, 1987
4707381 Method for finish coating on polyurethane formed articles Nov. 17, 1987
4705720 Flexible multi-layer polyimide laminates Nov. 10, 1987
4704298 Coating spherical objects Nov. 3, 1987
4701403 Two-layer process for applying antistatic compositions to polyester supports Oct. 20, 1987
4685778 Process for nuclear hardening optics and product produced thereby Aug. 11, 1987
4675466 Stabilization of intraconnections and interfaces Jun. 23, 1987
H284 Non-carcinogenic, non-polluting sulfuric acid etchants for preparing aluminum surfaces for adhesive bonding Jun. 2, 1987
4666739 Process for the production of metal patterns on insulating substrates as well as insulating substrates with metal patterns, especially printed circuits May. 19, 1987
4664983 Polyester composition, the moldings of the composition and the process for manufacturing of the moldings May. 12, 1987
4664936 Aromatic polyamide fiber-based composite prepreg May. 12, 1987
4645734 Composite having conductive layer on resin layer and method of manufacturing Feb. 24, 1987
4645573 Continuous process for the sequential coating of polyester filaments with copper and silver Feb. 24, 1987
4643798 Composite and circuit board having conductive layer on resin layer and method of manufacturing Feb. 17, 1987
4642163 Method of making adhesive metal layers on substrates of synthetic material and device produced thereby Feb. 10, 1987
4639384 Method of casting urethane elastomer on metal Jan. 27, 1987
4637851 Method for the preparation of a laminate Jan. 20, 1987
4629635 Process for depositing a low resistivity tungsten silicon composite film on a substrate Dec. 16, 1986
4629636 Process for treating plastics with alkaline permanganate solutions Dec. 16, 1986
4615763 Roughening surface of a substrate Oct. 7, 1986
4615907 Plating poly(arylene sulfide) surfaces Oct. 7, 1986
4611892 Synthetic resin ophthalmic lens having a surface hard coat Sep. 16, 1986
4610895 Process for metallizing plastics Sep. 9, 1986
4609565 Method of fabricating solar cells Sep. 2, 1986
4601783 High concentration sodium permanganate etch batch and its use in desmearing and/or etching printed circuit boards Jul. 22, 1986
4601784 Sodium permanganate etch baths containing a co-ion for permanganate and their use in desmearing and/or etching printed circuit boards Jul. 22, 1986
4601933 Heat transfer promoters and method of using the same Jul. 22, 1986
4597988 Process for preparing printed circuit board thru-holes Jul. 1, 1986
4597992 Process for regenerating a man conveyor handrail Jul. 1, 1986
4592929 Process for metallizing plastics Jun. 3, 1986
4592852 Composition and process for treating plastics with alkaline permanganate solutions Jun. 3, 1986

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