Inventor
Keith M. Kotchick
Inventor
St. Paul, MN, US
Overview
Patents· 31 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein38%
G02BOptical elements, systems or apparatus35%
Y10TTechnical subjects covered by former us classification10%
B29CShaping or joining of plastics3%
B29LIndexing scheme associated with subclass b29c, relating to particular articles3%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%
F21VFunctional features or details of lighting devices or systems thereof3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
C09KMaterials for miscellaneous applications, not provided for elsewhere1%
H04MTelephonic communication1%
PatentTitleYear
9,690,038'Systems and methods for controlling backlight output characteristics'20179,488,859'Backlighting system including a specular partial reflector and a circular-mode reflective polarizer'20169,116,285'Light directing film'20158,947,799'Light directing film'20158,804,069'Backlighting system including a specular partial reflector and a circular-mode reflective polarizer'20148,339,542'Passive and hybrid daylight-coupled N-stack and collapsible backlights for sunlight viewable displays'20128,149,351'Passive and hybrid daylight-coupled backlights for sunlight viewable displays'20127,520,654'Adhesive stacking for multiple optical films'20097,419,272'Day and night film'20087,413,336'Adhesive stacking for multiple optical films'20087,385,659'Structured transflectors for enhanced ambient and backlight operation of transmissive liquid crystal displays'20087,339,635'Pre-stacked optical films with adhesive layer'20087,327,923'Spiral multilayer fibers'20087,303,322'Multiple lightguide backlight'20077,293,899'Backlighting transmissive displays'20077,245,431'Reflective polarizer assembly'20077,236,217'Package of optical films with zero-gap bond outside viewing area'20077,223,005'Hybrid lightguide backlight'20077,088,405'Structured transflectors for enhanced ambient and backlight operation of transmissive liquid crystal displays'20067,084,938'Non-inverting transflective assembly'20066,985,291'Non-inverting transflective assembly'20066,975,455'Transflective layer for displays'20056,894,821'Optical devices having reflective and transmissive modes for display'20056,768,586'Polarizer constructions and display devices exhibiting unique color effects'20046,663,262'Backlighting transmissive displays'20036,642,977'Liquid crystal displays with repositionable front polarizers'20036,624,936'Color-compensated information displays'20036,576,887'Light guide for use with backlit display'20036,574,044'Polarizer constructions and display devices exhibiting unique color effects'20036,280,063'Brightness enhancement article'20015,919,551'Variable pitch structured optical film'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2017Patents assigned to 3M INNOVATIVE PROPERTIES CO (30)· patent assignee history
1999Based in Woodbury, MN, US· patent location history
2001–2017Based in St. Paul, MN, US· patent location history
2007–2017Patents assigned to KOTCHICK KEITH M (5)· patent assignee history
2007–2017Patents assigned to EPSTEIN KENNETH A (2)· patent assignee history
2007–2017Patents assigned to LAMB DAVID J (2)· patent assignee history
2012Patents assigned to BIERNATH ROLF W (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| 3M INNOVATIVE PROPERTIES CO | 30 | 1999–2017 |
| KOTCHICK KEITH Mself | 5 | 2007–2017 |
| BIERNATH ROLF W | 2 | 2012 |
| EPSTEIN KENNETH A | 2 | 2007–2017 |
| LAMB DAVID J | 2 | 2007–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Paul, Minnesota, US | 30 | 2001–2017 |
| Woodbury, Minnesota, US | 1 | 1999 |