Inventor · disambiguated record
Karl Hallgren
Also filed as: HAELLGREN KARL · HALLGREN KARL · HALLGREN KARL A
3 granted patents·1 pending application·71 citations·filing 1975–2024
72Inventor score
Top patents by PatentIndex Score
4 records- 0182US3997635AMethod and device for evaporative coolingMUNTERS AB CARL·Filed 1975·Granted Dec 14, 1976·48 cites·7 claims
- 0253US4244422AMethod and device for defrosting heat exchanger without impairment of its heat exchange efficiencyMUNTERS AB CARL·Filed 1978·Granted Jan 13, 1981·17 cites·7 claims
- 0352US2025337760A1Network Authentication EvaluationMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2024·Application pending·0 cites
- 0433US4258656ADevice in spray booths for e.g. spray-paintingMUNTERS AB CARL·Filed 1978·Granted Mar 31, 1981·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →