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Inventor

Stephen E. O'Brien

Inventor
Ottumwa, IA, US

Overview

14→
Patents
1992–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 14 as inventor

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

A01Dprimary
A01DHarvesting12%
A01FProcessing of harvested produce9%
B82YSpecific uses or applications of nanostructures9%
C01BNon-metallic elements9%
C01GCompounds containing metals not covered by subclasses c01d or c01f9%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B62DMotor vehicles6%
C04BLime, magnesia6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
11,030,647Cadence management system for consumer promotions202110,537,064Retraction mechanism for extendable carriages of an agricultural accumulator202010,212,886Retraction mechanism for extendable carriages of an agricultural accumulator201910,118,862Multi-metal oxide ceramic nanomaterial20189,359,259'Multi-metal oxide ceramic nanomaterial'20169,120,504'Steering linkage interface between steering cylinder and ground drive pump displacement control arms'20159,108,850'Preparing nanoparticles and carbon nanotubes'20158,925,672'Steering control system for hydrostatically driven front vehicle ground wheels and steerable rear caster wheels'20158,367,034'Methods for preparing single-walled carbon nanotubes'20138,182,786'Nano-sized particles, processes of making, compositions and uses thereof'20125,950,410'Hydraulically powered baler plunger drive mechanism'19995,476,794'Detection method for checking surfaces for nitrogen-containing explosives or drugs'19955,343,680'Suspension mechanism for reel mowers'19945,170,613'Reel motor cutting unit frame'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2020Patents assigned to DEERE & CO (7)· patent assignee history
1992–2015Based in Ottumwa, IA, US· patent location history
2012–2015Patents assigned to O'BRIEN STEPHEN (3)· patent assignee history
2012–2015Patents assigned to UNIV COLUMBIA (3)· patent assignee history
2012–2018Based in New York, NY, US· patent location history
2013–2015Patents assigned to HUANG LIMIN (2)· patent assignee history
2016–2018Patents assigned to UNIV CITY NEW YORK RES FOUND (2)· patent assignee history
2016Based in Jersey City, NJ, US· patent location history
2019–2020Based in Moline, IL, US· patent location history
2021Based in Fremont, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DEERE & CO71992–2020
O'BRIEN STEPHENself32012–2015
UNIV COLUMBIA32012–2015
HUANG LIMIN22013–2015
UNIV CITY NEW YORK RES FOUND22016–2018
Locations
LocationPatentsSpan
Ottumwa, IA, US51992–2015
New York, New York, US42012–2018
Moline, Illinois, US22019–2020
Fremont, California, US12021
Jersey City, New Jersey, US12016