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Inventor

Roy Trence Johnson

Inventor
McKenzie, TN, US

Overview

3→
Patents
2009–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B01Fprimary
B01FMixing, e.g. dissolving, emulsifying or dispersing20%
C02FTreatment of water, waste water, sewage, or sludge20%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management20%
A01KAnimal husbandry10%
G06FElectric digital data processing10%
G06TImage data processing or generation, in general10%
H04LTransmission of digital information, e.g. telegraphic communication10%
PatentTitleYear
11,080,388Automatic extraction of information from obfuscated image regions20217,954,791'Fine bubble airlift device'20117,622,040'Fine bubble airlift device'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009–2011Patents assigned to TEKNI PLEX INC (2)· patent assignee history
2009–2011Based in McKenzie, TN, US· patent location history
2021Patents assigned to PAYPAL INC (1)· patent assignee history
2021Based in San Jose, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TEKNI PLEX INC22009–2011
PAYPAL INC12021
Locations
LocationPatentsSpan
McKenzie, TN, US22009–2011
San Jose, California, US12021