DP

David W. Pratt

BL Bp Chemicals Limited: 3 patents #115 of 566Top 25%
📍 Auburn, WA: #17 of 480 inventorsTop 4%
🗺 Washington: #4,086 of 76,902 inventorsTop 6%
Overall (All Time): #198,332 of 4,157,543Top 5%
22
Patents All Time

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDate
7255380 Bottom-emptying device for tapered bailer 2007-08-14
6989092 Bailer having built-in filter 2006-01-24
6979033 Dual function bailer 2005-12-27
6966587 Self-emptying bailer 2005-11-22
6846028 Dual function bailer 2005-01-25
6669255 Apparatus for inhibiting contamination of sample during bailer emptying 2003-12-30
6601889 Air-tight bailer system 2003-08-05
6543302 Multiple check valve bailer 2003-04-08
6472341 Polymerization catalysts Brian Stephen Kimberley 2002-10-29
6457760 High speed insertion bailer having snap-in spider for valve alignment 2002-10-01
6457486 Bailer having leak-inhibiting seal 2002-10-01
6431272 Controlled slow descent bailer 2002-08-13
6410659 Polymerization process Peter James Maddox, John Paul McNally 2002-06-25
D458341 Ribbed filter 2002-06-04
6399532 Polymerization catalyst Birgit Angelika Dorer, Christopher Sharp 2002-06-04
6390123 Bailer having leak-inhibiting seal 2002-05-21
6286880 Bailer having leak-inhibiting cushioned seal 2001-09-11
6167962 Anti-wobbling bailer with high speed insertion 2001-01-02
6135523 Bailer having leak-inhibiting seal 2000-10-24
6058790 Adjustable length sampler tube 2000-05-09
5996800 Resealable plastic bag having venting means 1999-12-07
D267583 Fireplace insert 1983-01-11