Spiro Research B.V.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5601635 Method and apparatus for deaerating a liquid in a substantially closed liquid circulation systemOct 25, 94Feb 11, 97[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6968863 Non-return valveExpiredSep 29, 99Nov 29, 05[F16K]
6926069 Method for manufacturing a double-walled heat exchanging tube with leak detectionExpiredJul 21, 00Aug 09, 05[F28D, F28F]
6526921 Method for operating a closed hot-water installation and apparatus to be used therewithExpiredJun 18, 01Mar 04, 03[F22D]
6192583 Heat exchanger tube and method of manufacturing sameExpiredMay 17, 99Feb 27, 01[F28F]
6119951 Expansion control for a closed fluid circulation systemExpiredOct 13, 98Sep 19, 00[F24D]
5456409 Method and device for maintaining a fluid at a working pressure in a substantially closed fluid circulation systemExpiredOct 29, 93Oct 10, 95[F24D]
4747737 Fixing device for mounting objects on supportsExpiredDec 22, 86May 31, 88[F16L, F16B]
4718922 Method of and apparatus for the deaeration of liquid flowing in a closed circulation systemExpiredDec 20, 85Jan 12, 88[B81D]
4655282 Heat exchanger duct with heat exchange wiringExpiredAug 29, 84Apr 07, 87[F28F]
4646823 Pipe for utility or service systemsExpiredMay 23, 85Mar 03, 87[F28F]
4645518 Method and apparatus for reducing the gas content of a liquidExpiredMay 23, 85Feb 24, 87[B01D]
4456172 Method of and apparatus for the degasification of circulation systems for liquidsExpiredJul 01, 81Jun 26, 84[F24D]
4381928 Apparatus for venting and/or degassing a pipeline systemExpiredMar 24, 81May 03, 83[B01D]

Top Inventors for This Owner

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