Inventor

Daniel J. Birk

Inventor
McHenry, IL, US

Overview

16→
Patents
1986–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 16 as inventor

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

B25Cprimary
B25CHand-held nailing or stapling tools60%
G01DMeasuring not specially adapted for a specific variable10%
G08BSignalling systems, e.g. personal calling systems10%
G04GElectronic time-pieces5%
G05BControl or regulating systems in general5%
H02JElectric power networks5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1990Patents assigned to PITTWAY CORP (4)· patent assignee history
1986–1990Based in Aurora, IL, US· patent location history
2004–2021Patents assigned to ILLINOIS TOOL WORKS (12)· patent assignee history
2004–2021Based in McHenry, IL, US· patent location history
2014Patents assigned to BIRK DANIEL (1)· patent assignee history
2014Patents assigned to LARGO MARC (1)· patent assignee history
2014Patents assigned to PORTH CHRISTOPHER H (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ILLINOIS TOOL WORKS122004–2021
PITTWAY CORP41986–1990
BIRK DANIELself12014
LARGO MARC12014
PORTH CHRISTOPHER H12014
Locations
LocationPatentsSpan
McHenry, Illinois, US122004–2021
Aurora, Illinois, US41986–1990