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Inventor

John J. Pietruszewski

Inventor
Buffalo, NY, US

Overview

5→
Patents
1976–1993
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

B01Dprimary
B01DSeparation27%
B01FMixing, e.g. dissolving, emulsifying or dispersing18%
C02FTreatment of water, waste water, sewage, or sludge18%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management18%
A01KAnimal husbandry9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
RE034434'Oxygen enriched air system'19934,867,766'Oxygen enriched air system'19894,140,495'Turndown control for pressure swing adsorption'19794,066,722'Apparatus for sparging gas into liquid'19783,956,124'Hypolimnion oxygenation'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1989Patents assigned to UNION CARBIDE CORP (4)· patent assignee history
1976–1993Based in Buffalo, NY, US· patent location history
1993Patents assigned to PRAXAIR TECHNOLOGY INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNION CARBIDE CORP41976–1989
PRAXAIR TECHNOLOGY INC11993
Locations
LocationPatentsSpan
Buffalo, New York, US51976–1993