DAVEY TREE EXPERT COMPANY, THE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C05C NITROGENOUS FERTILISERS114

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7534280 Fertilizers containing polyamino acidSep 06, 06May 19, 09[C05C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0210,760 PHOSPHORUS-FREE OR LOW PHOSPHORUS FERTILIZERAbandonedFeb 21, 12Aug 23, 12[C05C, C05B]
2006/0236,734 Fertilizers containing polyamino acidAbandonedApr 25, 05Oct 26, 06[C05D]
2005/0262,763 Tree injection deviceAbandonedMay 04, 05Dec 01, 05[A01G]
4908983 Tree injectorExpiredMar 09, 88Mar 20, 90[A01G]
4529000 Flow volume proportioning systemExpiredDec 28, 82Jul 16, 85[F16K, G05D]

Top Inventors for This Owner

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