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Inventor

Daniel W. Hennen

Inventor
Cottage Grove, MN, US

Overview

16→
Patents
2002–2020
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.

G02Bprimary
G02BOptical elements, systems or apparatus17%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form13%
C09JAdhesives9%
B29CShaping or joining of plastics6%
B29DProducing particular articles from plastics or from substances in a plastic state6%
B29LIndexing scheme associated with subclass b29c, relating to particular articles6%
H04NPictorial communication, e.g. television6%
B01DSeparation4%
F21SNon-portable lighting devices4%
F24FAir-conditioning4%
PatentTitleYear
10,773,490Surface-modified adhesives202010,761,320Optical stack including a grating202010,656,312Insulated glazing units and microoptical layer including microstructured anisotropic diffuser and methods202010,646,809Air filter condition sensing202010,647,032Multilayer optical adhesives and methods of making same202010,363,509Air filter condition sensing201910,353,214Optical stacks for sparkle reduction201910,316,226Method for preparing structured laminating adhesive articles20199,995,944Optical stacks for sparkle reduction20189,970,614Insulated glazing units and microoptical layer comprising microstructured diffuser and methods20189,862,124'Multilayer optical adhesives and methods of making same'20189,229,261'Electronically switchable privacy film and display device having same'20169,229,253'Electronically switchable privacy film and display device having same'20166,758,992'Process of stripe coating to produce microstructured composite articles'20046,710,941'Fresnel lens for projection screens'20046,407,859'Fresnel lens for projection screen'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2020Patents assigned to 3M INNOVATIVE PROPERTIES CO (16)· patent assignee history
2002–2020Based in Cottage Grove, MN, US· patent location history
2019Patents assigned to CORNING INC (1)· patent assignee history
2019Based in St. Paul, MN, US· patent location history
2020Patents assigned to BAETZOLD JOHN P (1)· patent assignee history
2020Patents assigned to HAO ENCAI (1)· patent assignee history
2020Patents assigned to HENNEN DANIEL W (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3M INNOVATIVE PROPERTIES CO162002–2020
BAETZOLD JOHN P12020
CORNING INC12019
HAO ENCAI12020
HENNEN DANIEL Wself12020
Locations
LocationPatentsSpan
Cottage Grove, Minnesota, US152002–2020
St. Paul, Minnesota, US12019