Thread: Robeson "Frozen Heat"?

Sorry all, not pics but a question after some background. Please jump in to correct anything that you can confirm is incorrect. Knives have been around since the stone age. Razors, a refined knife followed some time later in one form or another. Knife companies from the 1800's or earlier produced straight razors and hoped that it implied that a good straight razor from their company meant a good knife also. Lately, to better understand straight razors I have been studying knives, the metals used and the heat treating. In the late 1940's to 50's cryo treating the metals in the heat treating process began. Some of the stuff I have been reading suggests that Robeson invented the cryo treating of stainless steel and called the process "Frozen Heat". Here is a link some of ya may find interesting: http://www.knife-expert.com/stlessh.txt It states that knives and cutlery were made using this process and some of the knives I've see online are also marked 'Sure Edge'. My question to all of you is "Have any of you seen a Robeson razor marked "Frozen Heat?". I would really love to see a pic of one if ya have any.

As a side note to my knife research I have been researching cryogenic treating materials. From what I have read, it is not limited to stainless steels and not only steel. Here are some interesting links if you would like to learn more: Cryogenic Processing, Treatment by Controlled Thermal Processing, Inc.
DEEP-CRYOGENIC TREATMENT OF STEEL: SAVES MONEY WHILE IMPROVING MECHANICAL PROPERTIES
Tempering Metal Website and the Cryogenic Tempering Process - Integrated Cryogenic Systems Inc. I would be very interested in anything you may learn as it may relate to straight razors.

I had asked Thomas (eTom) who is a German living in Germany what Friodur meant in English. Thomas kindly replied that it was a 'Made-Up' name. I believe that Thomas said that Frio referred to: surface treatment, and that dur meant: 'Icy or Cold'. So to combine the two it would be that Friodur means: A surface treated with cold!

Sorry, I think I told cudarunner it means ice-tempering.
I'm not a translater, maybe somebody find the correct English term.
By my mind Joed found some good links.
I'm no technician for such things.

Friodur is a German utility patent from around 1939 and a real patent from around 1950 by Zwilling.
But I'm not 100% sure.
Maybe Buddel can tell us more about this steel.