Inventor
David A. Johnson
Inventor
Corvallis, OR, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B29Cprimary
B29CShaping or joining of plastics7%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables7%
Y10TTechnical subjects covered by former us classification6%
G06FElectric digital data processing5%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution5%
B05DProcesses for applying fluent materials to surfaces, in general3%
B26DCutting3%
B29LIndexing scheme associated with subclass b29c, relating to particular articles3%
B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering3%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors3%
PatentTitleYear
10,947,419Method for joining dissimilar materials202110,934,407Process for making horizontally-aligned epoxy graphene material202110,925,644Implantable fluid delivery devices, systems, and methods202110,919,215Electrostatic polymer aerosol deposition and fusing of solid particles for three-dimensional printing202110,898,914Methods and systems for creating aerosols202110,882,972Functionalized graphene oxide curable formulations202110,698,546Detection of a protective cover film on a capacitive touch screen202010,268,864High-resolution electric field sensor in cover glass201910,254,884Apparatus for piezoelectric force detection201910,139,120Integrated venturi heating elements for air curtains20189,558,390'High-resolution electric field sensor in cover glass'20179,552,117'Capacitive touch panel with increased scan frequency using dynamic phase compensation'20178,568,210'Integrated venturi heating elements for air curtains'20137,464,516'Over-wrap apparatus and method for a bobbin and paper'20087,448,124'Apparatus for installing an edge piece on a battery plate'20087,300,197'Apparatus for dissolving a solid material in a liquid'20077,077,876'Method of installing an edgepiece on a battery plate'20066,971,838'Battery plate feeder having low vacuum, high flow rate pick-up head'2005D0502257'Automobile air filter and freshener'20056,685,753'Method of installing an edge piece on a battery plate and apparatus for performing same'20046,062,807'Battery plate feeder having oscillating pick-up head'20006,030,171'Battery plate feeder having oscillating pick-up head'20005,700,340'Method of manufacturing a tape having a succession of surface-type fastener pieces'19975,410,951'Apparatus and method for continuous high-volume steam cooking'19955,394,732'Method and apparatus for ultrasonic detection of air bubbles'19955,377,492'Conveyor system for chilling food products'19955,326,374'Body-implantable device for controlling the size of a fluid passageway'19945,129,643'Apparatus for stacking pasted battery plates'19925,102,287'Plate handling apparatus'19924,824,307'Apparatus for vertically stacking battery plates'19894,822,234'Plate feed apparatus'19894,758,126'Plate feed apparatus'19884,581,087'Method of making a thermoplastic adhesive-coated tape'19864,472,461'Method for producing perforations in an adhesive-coated porous web'19844,206,744'Air control assembly for heat circulating fireplace'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2018Patents assigned to JOHNSON DAVID A (4)· patent assignee history
1988–2008Based in Corvallis, OR, US· patent location history
1989–2004Patents assigned to TEKMAX INC (6)· patent assignee history
1995Based in Metairie, LA, US· patent location history
2005–2008Patents assigned to MITEK HOLDINGS INC (3)· patent assignee history
2013–2018Based in New Castle, PA, US· patent location history
2017–2020Patents assigned to QUALCOMM INC (5)· patent assignee history
2017–2020Based in Cupertino, CA, US· patent location history
2021Patents assigned to PALO ALTO RES CT INC (6)· patent assignee history
2021Based in San Francisco, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PALO ALTO RES CT INC | 6 | 2021 |
| TEKMAX INC | 6 | 1989–2004 |
| QUALCOMM INC | 5 | 2017–2020 |
| JOHNSON DAVID Aself | 4 | 1988–2018 |
| MITEK HOLDINGS INC | 3 | 2005–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Corvallis, OR, US | 11 | 1988–2008 |
| San Francisco, California, US | 6 | 2021 |
| Cupertino, California, US | 5 | 2017–2020 |
| New Castle, Pennsylvania, US | 2 | 2013–2018 |
| Metairie, LA, US | 2 | 1995 |