NICHOLSONS SEALING TECHNOLOGIES LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6131915 SealNov 01, 96Oct 17, 00[F16J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5669612 Metallic seal ringsExpiredOct 07, 96Sep 23, 97[F16J]
5577742 Metallic stem seal with inclined channel and integral support memberExpiredJun 06, 95Nov 26, 96[F16J]
5558347 SealExpiredApr 26, 95Sep 24, 96[F16J]
5467966 SealsExpiredSep 06, 94Nov 21, 95[F16K]
5354072 Hollow metal sealing ringsExpiredJan 18, 94Oct 11, 94[F16J]
5240263 Metallic sealing rings and their manufactureExpiredJul 09, 92Aug 31, 93[F16J]
5195759 Static sealExpiredAug 06, 91Mar 23, 93[F16J]
4915397 Hollow metallic sealing ringsExpiredJun 27, 86Apr 10, 90[F16J]
4890816 Valve seatsExpiredJun 15, 88Jan 02, 90[F16K]
4832353 Ring sealsExpiredJun 27, 88May 23, 89[F16J]
4798392 Hollow metallic sealing ringExpiredOct 23, 87Jan 17, 89[F16J]
4784397 Hollow metallic sealing ringExpiredNov 16, 87Nov 15, 88[F16J]

Top Inventors for This Owner

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