Inventor

Johannes Nicolaas Bothma

Inventor

Otorohanga, NZ

Overview

2002–2021

Patent span

Mechanical engineering

Primary field (CPC F)

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

A61Mprimary

A61MDevices for introducing media into, or onto, the body28%

F04DNon-positive-displacement pumps28%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants12%

F01BMachines or engines, in general or of positive-displacement type, e.g. steam engines4%

F02GHot gas or combustion-product positive-displacement engine plants4%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids4%

F16HGearing4%

F25BRefrigeration machines, plants or systems4%

G01FMeasuring volume, volume flow, mass flow or liquid level4%

H02NElectric machines not otherwise provided for4%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to CSIR (1)· patent assignee history

2002Based in Pretoria, ZA· patent location history

2016–2021Patents assigned to FISHER & PAYKEL HEALTHCARE LTD (7)· patent assignee history

2016–2019Patents assigned to BOTHMA JOHANNES NICOLAAS (2)· patent assignee history

2016–2021Based in Otorohanga, NZ· patent location history

2019Patents assigned to BENT SCOTT (1)· patent assignee history

2019Patents assigned to DARBY ADAM JOHN (1)· patent assignee history

2021Based in Auckland, NZ· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FISHER & PAYKEL HEALTHCARE LTD	7	2016–2021
BOTHMA JOHANNES NICOLAASself	2	2016–2019
BENT SCOTT	1	2019
CSIR	1	2002
DARBY ADAM JOHN	1	2019

Locations