LexDanaLexDanabeta
Inventor

David E. McDowell

Inventor
Grand Rapids, MI, US

Overview

24→
Patents
1977–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 24 as inventor

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

A47Lprimary
A47LDomestic washing or cleaning34%
B01DSeparation8%
F16KValves8%
H05BElectric heating8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
A46BBrushes7%
B04CApparatus using free vortex flow, e.g. cyclones7%
F22BMethods of steam generation5%
B01FMixing, e.g. dissolving, emulsifying or dispersing3%
C11DDetergent compositions3%
PatentTitleYear
11,006,536Deployable hardened housing units202110,653,022Deployable hardened housing units202010,376,124Surface cleaning apparatus20197,918,909'Cyclone separator with fine particle separation member'20117,752,705'Extraction cleaning with heating'20107,748,079'Cyclone separator with fine particle separation member'20107,475,712'Extraction cleaning with tank mounting'20097,247,181'Cyclonic dirt separation module'20077,188,388'Vacuum cleaner with detachable cyclonic vacuum module'20077,062,816'Surface cleaner with power drive'20067,013,528'Floor cleaner with dusting'20066,898,820'Extraction cleaning with heating'20056,810,557'Cyclone separator with vacillating debris inhibitor'20046,446,302'Extraction cleaning machine with cleaning control'20026,131,237'Upright extraction cleaning machine'20005,189,755'Wet vacuum/extractor and cleaning solution tank therefor'19935,086,537'Compact extractor'19924,910,828'Cleaning apparatus'1990RE032751'Stick vacuum cleaner'19884,766,638'Four-way vacuum cleaner'19884,644,605'Stick vacuum cleaner'19874,636,232'Filter stack'19874,357,727'Dual brush floor sweeper'19824,042,997'Vacuum cleaner with improved brush'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1992Patents assigned to BISSELL INC (6)· patent assignee history
1977–2019Based in Grand Rapids, MI, US· patent location history
1987Patents assigned to AMWAY CORP (1)· patent assignee history
2000–2019Patents assigned to BISSELL HOMECARE INC (13)· patent assignee history
2020Patents assigned to CACI INC FED (1)· patent assignee history
2020–2021Based in Arlington, VA, US· patent location history
2021Patents assigned to CACI INC —FEDERAL (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BISSELL HOMECARE INC132000–2019
BISSELL INC61977–1992
AMWAY CORP11987
CACI INC FED12020
CACI INC —FEDERAL12021
Locations
LocationPatentsSpan
Grand Rapids, MI, US221977–2019
Arlington, Virginia, US22020–2021