[Ferro List] FC Patent Link

[paul at ferrocement.net]

Hi Keith,

Michael Pemberton is Martin Iorns licensee in Great Britain and as I
remember he and Martin hold the rights [or at least did] to the patent for
LFC in Europe. I am not certain if the patent has expired or is still
current.

I do know that the patent issued to Monk was issued when Iorn's LFC patent
was current in europe. Martin's LFC patents in the U.S. expired a few
years back and are now in the public domain. His process is free for
anyone in the U.S. to use.

Monk has a reputation in the FC business that is somewhat questionable and
I agree that the patent should not have been issued.

I did find the fairly detailed description of the mortar and mortar
sprayer interesting.

Paul

> For my money, that's a crap patent which should never have issued.  On
> the other hand, the good news is that it expired on Oct. 8 1998 for
> failure to pay maintenance fees, its brief existence now puts everything
> substantially like that into the public domain, and there are a few
> useful oddments in it, such as a design for a mortar sprayer suitable
> for someone light on engineering skills but with access to a hardware
> store...
>
> kb
>
> Paul Sarnstrom wrote:
>> Hello All,
>>
>> I was doing a search on ferrocement and flyash and found the following
>> interesting patent.
>> Shortcut to:
>> http://www.wipo.int/pctdb/en/wo.jsp?WO=1991%2F12215&IA=WO1991%2F12215&DISPLAY=DESC
>>
>> Paul
>
>
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