SEMCO INCORPORATED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 3131
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5496397 Desiccant-coated substrate and method of manufactureDec 07, 94Mar 05, 96[B01J, B01D]
5401706 Desiccant-coated substrate and method of manufactureJan 06, 93Mar 28, 95[B01J, B01D]
5300138 Langmuir moderate type 1 desiccant mixture for air treatmentJan 21, 93Apr 05, 94[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5740654 Packaging assembly for freeze-dried preparationsExpiredApr 12, 96Apr 21, 98[B65B]
5594498 Personal audio/video surveillance systemExpiredOct 14, 94Jan 14, 97[H04N]
4893745 Suspendable folderExpiredFeb 13, 89Jan 16, 90[B65D]
4769053 High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheelExpiredMar 26, 87Sep 06, 88[B01D]
4732206 Plunger tip having a safety indicator surfaceExpiredDec 19, 80Mar 22, 88[B22D]

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