Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RC

Robert B. Carr — 27 Patents

WDWagner Development: 8 patents #1 of 1Top 100%
GUGo Unlimited: 1 patents #3 of 11Top 30%
HAHaemonetics: 1 patents #65 of 151Top 45%
ALAlfa Laval: 1 patents #7 of 26Top 30%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
U.S. Philips: 1 patents #4,149 of 8,851Top 50%
KPKendro Laboratory Products: 1 patents #35 of 77Top 50%
Durham, NC: #152 of 4,103 inventorsTop 4%
North Carolina: #1,521 of 45,564 inventorsTop 4%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
Robert B. Carr has been granted 27 US patents while listed as an inventor at Wagner Development. The first was granted in 1982 and the most recent in October 2021. Robert B. Carr ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list Robert B. Carr in Durham, NC, US.

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
11135599 Two zone disposable process contact centrifuge for bio-separations 2021-10-05
10449555 Centrifugal separator with annular piston for solids extrusion 2019-10-22
8475352 Solids discharge centrifugal separator with disposable contact elements 2013-07-02
7935042 Gas driven solids discharge and pumping piston for a centrifugal separator 2011-05-03
7628749 Solids recovery using cross-flow microfilter and automatic piston discharge centrifuge 2009-12-08
7618361 Gas driven solids discharge and pumping piston for a centrifugal separator 2009-11-17
7261683 Conical piston solids discharge and pumping centrifugal separator 2007-08-28
7052451 Conical piston solids discharge centrifugal separator 2006-05-30
6986734 Centrifugal separator with scraper or piston for discharging solids 2006-01-17
6776752 Automatic tube bowl centrifuge for centrifugal separation of liquids and solids with solids discharge using a scraper or piston 2004-08-17
6632166 Centrifuge having axially movable scraping assembly for automatic removal of solids 2003-10-14
6616590 Low-shear feeding system for use with centrifuges Stephen B. Kessler, Gary W. Brown, Sr. 2003-09-09
6260390 Dry cleaning process using rotating basket agitation 2001-07-17
6212916 Dry cleaning process and system using jet agitation 2001-04-10
6100779 CRT deflection unit and its method of manufacture Stephen P. A. Luard 2000-08-08
5823937 Low-shear feeding system for use with centrifuges 1998-10-20
5743840 Centrifuge with a heating jacket for drying collected solids 1998-04-28
5733238 Scraping assembly having angularly offset scraper blades for removing solids from an imperforate bowl centrifuge 1998-03-31
5674174 Low-shear feeding system for use with bottom feed centrifuges 1997-10-07
D377685 Blood withdrawal and separation set Theodoor H. S. Sibinga, Joseph R. Plante, Andrew P. Lanciano, James R. Loible, David W. Newby +1 more 1997-01-28
5492016 Capacitive melt pressure measurement with center-mounted electrode post Gino A. Pinto, Leif E. LaWhite, Gerard Eggleston, Boruch B. Frusztajer 1996-02-20
5425698 Centrifugal separator with flexibly suspended restrainable bowl 1995-06-20
5356367 Centrifugal separator with flexibly suspended restrainable bowl 1994-10-18
5347295 Control of a computer through a position-sensed stylus Todd A. Agulnick, Tony Hoeber, S. Jerrold Kaplan, David Low, Michael Michio Ouye 1994-09-13
5328441 Imperforate bowl centrifugal separator with solids gate 1994-07-12