LexDanaLexDanabeta
Inventor

Richard J. Hetherington

Inventor
Pine Plains, NY, US

Overview

3→
Patents
1981–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H05Kprimary
H05KPrinted circuits38%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1038%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
5,294,520'Zero undercut etch process'19944,336,088'Method of fabricating an improved multi-layer ceramic substrate'19824,302,625'Multi-layer ceramic substrate'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1994Patents assigned to IBM (3)· patent assignee history
1981–1994Based in Pine Plains, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBM31981–1994
Locations
LocationPatentsSpan
Pine Plains, New York, US31981–1994