Dover Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS 126
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5505536 Multiple shaft mixing device providing full kinematic self-cleaningAug 05, 94Apr 09, 96[B29B]
5183702 Barrier fabricsApr 03, 91Feb 02, 93[B32B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5188316 Aircraft autothrottle systemExpiredDec 30, 91Feb 23, 93[B64C]
5184654 Vapor recovery sealing devicesExpiredJun 18, 91Feb 09, 93[B65B]
5127428 Poppet valve assembly and method of making sameExpiredNov 26, 90Jul 07, 92[F16K]
5007468 Fluid dispensing nozzle construction having a diaphragm subassembly therein and methods of making the sameExpiredNov 19, 87Apr 16, 91[B65B]
5005876 Quick connect-disconnect couplingsExpiredDec 19, 89Apr 09, 91[F16L]
5005602 Poppet valve assemblyExpiredJul 18, 89Apr 09, 91[F16K]
4971121 Fluid dispensing nozzle construction, bellows-like tube therefor and methods of making the sameExpiredOct 10, 89Nov 20, 90[B67C, F16J, B65B]
4948094 Outlet valvesExpiredAug 09, 89Aug 14, 90[F16K]
4817662 Shut-off valveExpiredJun 26, 87Apr 04, 89[F16K]
D290692 Hydraulic wrecker and boom housingExpiredDec 14, 84Jul 07, 87[]
4659251 Liquid spill container and method of making and installing sameExpiredSep 23, 85Apr 21, 87[B65B]
4642188 Backwash apparatus for multi element filter unitExpiredMay 29, 85Feb 10, 87[B01D]
4598742 Method and apparatus for monitoring liquid stock in a storage tankExpiredNov 04, 85Jul 08, 86[G01N, B65B, G01F]
4557302 Retainer ring for the spout of a fluid dispensing nozzleExpiredDec 17, 81Dec 10, 85[B67C, B65B]
4543979 Liquid level control having improved instrument air valveExpiredJul 24, 84Oct 01, 85[F16K]
4473868 Light support assembly for tow trucksExpiredOct 31, 83Sep 25, 84[B60Q]
4465209 Information center for gasoline dispensing nozzleExpiredAug 02, 82Aug 14, 84[B67D]
D263618 Dispensing nozzleExpiredJun 19, 79Mar 30, 82[D230]
4297209 High solids filterExpiredApr 04, 80Oct 27, 81[B01D]
4286635 Automatic shut-off nozzle having an arrangement for controlling when automatic shut off occurs in response to pressure in a sealed tankExpiredSep 20, 79Sep 01, 81[B65B]

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