Inventor

Frank H. Doyal, II

Inventor

Raleigh, NC, US

Overview

1→

Patents

1981

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 1 as inventor

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

F02Bprimary

F02BInternal-combustion piston engines33%

F02FCylinders, pistons or casings, for combustion engines33%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines33%

PatentTitleYear

4,306,489'Composite piston'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to EXXON RESEARCH ENGINEERING CO (1)· patent assignee history

1981Based in Raleigh, NC, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
EXXON RESEARCH ENGINEERING CO	1	1981

Locations

Location	Patents	Span
Raleigh, NC, US	1	1981