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152 points toomuchtodo | 2 comments | | HN request time: 0.57s | source
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akira2501 ◴[] No.40216636[source]
Good.

They patented inhalers for a second time. It's the exact same drug. The only thing that changed was the propellant. It went from R-12 to R-134a. Everyone who had to switch out R-12 from refrigeration to drug manufacturing switched to R-134a. There was absolutely _nothing_ novel about it.

It was _criminal_ to allow them the second patent for just the propellant change. It took generic $5 inhalers off the market and replaced them with $95 inhalers. It was was one of the most corrupt swindles I've ever personally seen.

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mynameisnoone ◴[] No.40217053[source]
The exact same refrigerants that were used in US automotive air-conditioning, although now they moved on or are moving from R-134a to HFO-1234yf.

I still have a dozen vintage cans of R-12 but no vehicle that uses them.

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1. culopatin ◴[] No.40217233[source]
I replaced all my r12s with propane. Worked much better than the 134 and it was cheaper.
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2. akira2501 ◴[] No.40217403[source]
> propane

a.k.a. R-290