Inventor
Kees Dijkstra
Inventor
Eindhoven, NL
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems22%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers22%
F02GHot gas or combustion-product positive-displacement engine plants11%
G01NInvestigating or analysing materials by determining their chemical or physical properties11%
Y02ATechnologies for adaptation to climate change11%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
5,482,679'Device for determining the Wobbe index of a gas mixture'19964,722,517'Mechanical spring having negative spring stiffness useful in an electroacoustic transducer'19884,619,119'Heat pump comprising a thermally driven liquid pump and liquid pump for use in a heat pump'19864,607,382'Electroacoustic transducer unit with reduced resonant frequency and mechanical spring with negative spring stiffness, preferably used in such a transducer unit'19864,498,296'Thermodynamic oscillator with average pressure control'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1988Patents assigned to PHILIPS CORP (4)· patent assignee history
1985–1988Based in Eindhoven, NL· patent location history
1988Patents assigned to DIJKSTRA KEES (1)· patent assignee history
1988Patents assigned to HUIZINGA JAN (1)· patent assignee history
1988Patents assigned to VIDEC BERNARD P (1)· patent assignee history
1996Patents assigned to NEDERLANDSE GASUNIE NV (1)· patent assignee history
1996Based in Groningen, NL· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHILIPS CORP | 4 | 1985–1988 |
| DIJKSTRA KEESself | 1 | 1988 |
| HUIZINGA JAN | 1 | 1988 |
| NEDERLANDSE GASUNIE NV | 1 | 1996 |
| VIDEC BERNARD P | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Eindhoven, NL | 4 | 1985–1988 |
| Groningen, NL | 1 | 1996 |