Shipley Company LLC

Other

Robert E Hawkins

Daniel Y Pai

Stephen S Rodriguez

James E Rychwalski

Alaric Naiman

Richard Small

Richard L Harrison

Eugene D D'Ottavio

A photoresist composition comprising an alkali soluble resin, an o-naphthoquinone diazide sulfonic acid ester photoactive compound, and a vinyl ether compound. The o-naphthoquinone diazide sulfonic acid ester is replaced in part with the vinyl ether composition to decrease the concentration of the photoactive compound while increasing the photospeed of the composition.

Photoresist composition comprising an alkali-soluble resin, a quinone

The invention provides radiation sensitive compositions that comprise an amphoteric polymer, the polymer comprising at least two distinct carrier groups so that the polymer is positively polarized or negatively polarized upon treatment with an acid or base, respectively, enabling the compositions to be electrodeposited either anaphoretically or cataphoretically. Employing this amphoteric polymer in a radiation sensitive composition also allows the use of either an acid or base solution to image and remove the deposited composition irrespective of whether the composition was applied cataphoretically or anaphoretically. The compositions of the invention are also suitably formulated as liquid coating compositions or used to form dry film resists.

Method of forming a relief image comprising amphoteric compositions

The disclosed invention relates to a method of manufacturing hybrid circuit boards which uses the step of electrodeposition of a photoresist composition onto said boards. This step represents improvements in the prior art use of dry film or other types of photoresists which did not conform to all three dimensional surfaces and which were not aqueous developable.

Electrodepositable photoresists for manufacture of hybrid circuit boards

This invention provides a means of controlling the composition of electrodepositable photoresists emulsion. The system removes contaminants from the bath which may adversely effect the quality of the deposited coatings and allows for continuous monitoring of the conductivity of the system.

Electrodialysis cell for removal of excess electrolytes formed during

A process for manufacturing a 3-dimensional circuit board by electrophoretic deposition whereby (a) providing the board with a conductive surface and (b) applying a photoresist by electrophoretic deposition.

Electrophoretic method for applying photoresist to three dimensional

A power-actuated fastener tool for the driving of a fastener object into hard material such as concrete or metal, the tool being of a type having a relatively movable barrel and housing components, the barrel carrying a power load chamber body and a relatively movable piston member which in muzzleward movement drives the fastener object, and on breechward movement achieves ejection of the spent power load cartridge; and the housing carries a movable firing pin assembly. The housing is provided with an offset axially-extending wall, and its opposite ends serve as abutments co-opereative with a transverse pin, carried by the piston and extending through a slot in the barrel wall, to achieve various operative features.

Hammer-activated fastener tool for driving fastener projectiles

A method for coating a conductive surface with an organic coating where one discrete area of the organic coating is coated onto the surface in an image pattern by conventional means and another discrete area of the organic coating is electrophoretically deposited onto the surface. The process is useful for diverse applications including the fabrication of printed circuit boards.

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Upton, MA, United States of America

Robert E Hawkins