Growing community of inventors

Lund, Sweden

Leif Hallgren

Average Co-Inventor Count = 1.14

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 59

Leif HallgrenJarl A Andersson (1 patent)Leif HallgrenLeif Hallgren (4 patents)Jarl A AnderssonJarl A Andersson (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Alfa-laval Thermal Ab (3 from 29 patents)

2. Alfa Laval Corporation Ab (1 from 207 patents)


4 patents:

1. 5509471 - Distribution pattern of a plate heat exchanger

2. 5226474 - Plate evaporator

3. 5174370 - Plate evaporator

4. 4605060 - Heat exchanger plate

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as of
12/20/2025
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