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Inventor

Douglas G. Johns

Inventor
Topanga, CA, US

Overview

3→
Patents
2007–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F01Bprimary
F01BMachines or engines, in general or of positive-displacement type, e.g. steam engines33%
F02BInternal-combustion piston engines33%
A61KPreparations for medical, dental or toiletry purposes17%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations17%
PatentTitleYear
11,077,092Methods of treating diabetes by administering a glucagon receptor antagonist in combination with a cholesterol absorption inhibitor20217,677,210'Rotating barrel type internal combustion engine'20107,210,429'Rotating positive displacement engine'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007Patents assigned to JOHNS DOUGLAS MARSHALL (1)· patent assignee history
2007–2010Based in Topanga, CA, US· patent location history
2010Patents assigned to BARERE AARON (1)· patent assignee history
2010Patents assigned to CHASIN LAWRENCE C (1)· patent assignee history
2010Patents assigned to GARDNER CHRISTOPHER E (1)· patent assignee history
2010Patents assigned to JOHNS DOUGLAS M (1)· patent assignee history
2021Based in Ocean, NJ, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BARERE AARON12010
CHASIN LAWRENCE C12010
GARDNER CHRISTOPHER E12010
JOHNS DOUGLAS Mself12010
JOHNS DOUGLAS MARSHALLself12007
Locations
LocationPatentsSpan
Topanga, California, US22007–2010
Ocean, New Jersey, US12021