Paul Klasek wrote:
>
> Well ; I should NOT bite on this one for exactly the reasons Steve
> pointed out ;
> but I can understand someone fighting off a reverse engineering for
> enough time to get some distance (deserved) .
>
> So , let's face it , any decent chemist can remove almost anything from
> anything ;
> black epoxy would not stop me ; sorry Steve ; there are real nasties out
> there .
>
> Edwin , I did NOT give you this tip :
> You know those 45' inclined IC formers ? > pop a tube on top , take from
> bottom ?
> If you incorporate a fine EARTHED high speed steel brush into the path
> and play a bit with frictions on feed & exit ;
> with a vacuum nozzle by the other side ;
> you're home .
>
> Hey, Steve , thanks for sticking out for me when I thought I'm in ....
>     .
>
> See you folks
>
> Paul Klasek
> http://www.resmed.com
>
> >----------
> >From:  Stephen R. Gregory[SMTP:[log in to unmask]]
> >Sent:  Thursday, 11 June 1998 12:08
> >To:    [log in to unmask]
> >Subject:       Re: [TN] IC top mark
> >
> >Edwin,
> >
> >     I must say, I see a lot of posts from others about how to prevent I.C.
> >markings from coming off during the assembly process, but yours has to be the
> >first one I've seen asking how to remove the marking...are you sure you want
> >to do that?
> >
> >     I just say that because I know there was a big stink a while back about
> >some "shady" companies re-marking parts to indicate that they performed
> >faster
> >than they actually were...I'm not insinuating that you are doing that, but it
> >is unusual that one would want to remove the permanent marking from a IC.
> >
> >     But to give you some info, instead of removing the marking, why not
> >cover
> >it? A silkscreen and some black epoxy ink works just fine...
> >
> >                              -Steve Gregory-
> >
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Sometimes a manufacturer will want to remove the actual part number and
substitute another one to make it more difficult to reverse engineer a
product.

I know of one manufacturer who bought several of a competitors products,
re-designed the printed board and ordered all parts from the purchased
assemblies.  Went into production without testing -- ka pow -- they
didn't function.

Their competitor had taken an IC and removed the markings indicating it
was a ROM and re-labeled the part as a J-K flip-flop (or something like
that).  The counterfeitter discovered this too late and went bankrupt
--- yeh!


--
Ralph Hersey

Ralph Hersey & Associates
3885 Mills Way
Livermore, CA 94550-3319
PHN/FAX: 925.454.9805
e-mail: [log in to unmask]

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