Inventor

Calvin Derr

Inventor

Chicago, IL, US

Overview

5→

Patents

2001–2018

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 5 as inventor

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

F16Fprimary

F16FSprings30%

G02BOptical elements, systems or apparatus20%

B29CShaping or joining of plastics10%

B29LIndexing scheme associated with subclass b29c, relating to particular articles10%

E05DHinges or suspension devices for doors, windows or wings10%

E05FDevices for moving wings into open or closed position10%

E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof10%

PatentTitleYear

9,891,387'Fiber optic adapter with enhanced alignment'2018 9,720,183'Fiber optic adapter with enhanced alignment'2017 7,510,062'Rotary damper'2009 6,298,960'Small viscous precision damper'2001 6,213,454'Reverse air damper with latching mechanism'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2009Patents assigned to ILLINOIS TOOL WORKS (3)· patent assignee history

2001–2018Based in Chicago, IL, US· patent location history

2017–2018Patents assigned to PANDUIT CORP (2)· patent assignee history

2017Patents assigned to DALTON JOHN G (1)· patent assignee history

2017Patents assigned to DERR CALVIN H (1)· patent assignee history

2017Patents assigned to WILTJER JERRY A (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ILLINOIS TOOL WORKS	3	2001–2009
PANDUIT CORP	2	2017–2018
DALTON JOHN G	1	2017
DERR CALVIN Hself	1	2017
WILTJER JERRY A	1	2017

Locations

Location	Patents	Span
Chicago, Illinois, US	5	2001–2018