Microtrans was started in 1979 by Per
Olov Risman, as a small R&D and consulting company. It is still a
one-person company, with his wife Astrid, ably assisting in bookkeeping
and other administration. Major clients have been
Philips/Whirlpool (microwave ovens,
until 1998) and Personal Chemistry (now
Biotage, in Sweden, 1998–2003). From 2003,
substantial efforts are devoted to Risman´s own microwave systems
inventions HERA, HERB and CATS, which are licensed by the E×H company.
HERA systems are manufactured under E×H license for the microwave food
processing company MicVac AB
and its customers.
is active in the international safety standardisation work for
microwave ovens and industrial microwave installations, since many
years. This leads to inspection assignments for safety approval and
technical function of industrial microwave installations, as well
inspections on behalf of user and insurance companies after incidents
For a more complete list, click on the
Per Olov Risman at a conference dinner
– in the end of the 90’s.