Growing community of inventors

Varmdo, Sweden

Birger Pettersson

Average Co-Inventor Count = 2.00

ph-index = 3

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 = 64

Birger PetterssonKurt Karlsson (2 patents)Birger PetterssonStig Lundin (1 patent)Birger PetterssonBirger Pettersson (3 patents)Kurt KarlssonKurt Karlsson (7 patents)Stig LundinStig Lundin (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Svenska Rotor Maskiner Ab (2 from 47 patents)

2. Svenska Rotor Maskiner Aktiebolag (1 from 22 patents)


3 patents:

1. 4953629 - Pack of heat transfer plates

2. 4923374 - Method for producing pressure pulses in a mass of gas and a device for

3. 4449573 - Regenerative heat exchangers

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