1
Karim Zahedi, Jeffrey C Alexander: Filter apparatus and method for collecting fly ash and fine dust. EFB, Shapiro and Shapiro, December 29, 1981: US04308036 (47 worldwide citation)

Fly ash and fine dust in a gas stream from a coal combustor, for example, are efficiently collected in a 2-stage, tubular, granular bed filter. The stages of the filter are arranged one above the other so that the granules may move from the upper stage to the lower stage under the influence of gravi ...


2
Karim Zahedi, Jeffery Alexander, Peter Zieve: Apparatus and method for controlling pollutant emissions and for enhancing the manufacture of asphaltic roofing. EFB, Shapiro and Shapiro, March 13, 1979: US04144359 (30 worldwide citation)

Pollutant emissions produced in the manufacture of asphaltic roofing are controlled by the use of electrified bed filters. Filter bed granules coated with pollutants are removed from the beds periodically and are used in the manufacture of the roofing. A prefilter is employed to remove varnishing po ...


3
Jeffrey Alexander, Karim Zahedi: Method for treating gas streams. EFB, Shapiro and Shapiro, May 26, 1987: US04668489 (27 worldwide citation)

A gaseous constituent such as SO.sub.2, HCl, or HF is removed from a gas stream in a granular bed filter containing granules coated with a sorbent material which is reactive with the gaseous constituent. Granules carrying reacted sorbent material are removed from the granular bed filter, cleaned of ...


4
Karim Zahedi, Jeffrey C Alexander: Filter apparatus and method for collecting fly ash and fine dust. EFB, Shapiro and Shapiro, February 22, 1983: US04374652 (16 worldwide citation)

Fly ash and fine dust in a gas stream from a coal combustor, for example, are efficiently collected in a 2-stage, tubular, granular bed filter. The stages of the filter are arranged one above the other so that the granules may move from the upper stage to the lower stage under the influence of gravi ...


5
Jeffery C Alexander, Karim Zahedi: Method for treating gas streams. EFB, Shapiro and Shapiro, September 17, 1985: US04542000 (13 worldwide citation)

A gaseous constituent, such as sulfur dioxide, is removed from a gas stream in a granular bed filter containing granules coated with a sorbent material which is reactive with the gaseous constituent. Granules carrying reacted sorbent material are removed from the granular bed filter, cleaned of reac ...


6
Karim Zahedi, Jeffrey C Alexander, Peter B Zieve: Filter apparatus. EFB, Shapiro and Shapiro, March 19, 1985: US04505723 (11 worldwide citation)

Electrified filter bed apparatus includes inner and outer cylindrical bed-retaining structures for confining a granular bed therebetween. The inner cylindrical structure may comprise a cage of superposed frusto-conical louvers and the outer structure may comprise a similar cage or a perforated cylin ...


7
Björn Christian Granfeldt, Tomas Martin Gösta Hägg: Payment system. EFB Energiforbattringar, Jacobson Holman PLLC, February 28, 2006: US07006998 (2 worldwide citation)

The invention relates to a payment system utilizing so called “smart cards”, which include a microprocessor attached to the card with associated memory circuits for storage of transactions, and which via a terminal can be supplied an available and for the card holder useable amount. According to the ...


8
Karim Zahedi: Method for removal of particles and VOC from an airstream. EFB, Miles & Stockbridge P C, May 26, 2015: US09040008 (1 worldwide citation)

Apparatus and method for removal of particles and VOC from an airstream, in which particles carried by the airstream are charged by a corona ionizer and then collected by an electrically enhanced filter downstream of the ionizer. A catalytic filter downstream of the electrically enhanced filter remo ...


9
Stechmann Michael: Bewegliche einheit einer zähl-/registriereinrichtung der entnommenen elektrischen energie. Efb Elektronik M Stechmann Gmb, August 2, 2002: FR2820210-A1 (1 worldwide citation)

Une unité mobile (1) comporte une amenée d'énergie électrique (2), un point de prélèvement d'énergie (3 à 9) et un dispositif indicateur de comptage I d'enregistrement (14) comprenant un générateur d'impulsions de comptage, qui est en liaison fonctionnelle effective avec le point de prélèvement d'én ...


10
Zahedi Karim, Alexander Jeffrey C: Lit filtrant et methode de captage des cendres volantes et des poussieres, Filter apparatus and method for collecting fly ash and fine dust. Efb, GOWLING LAFLEUR HENDERSON, November 15, 1983: CA1156937

A-3374 IN THE UNITED STATES PATENT AND TRADEMARK OFFICE Inventors: Karim ZAHEDI and Jeffrey C. ALEXANDER Title: FILTER APPARATUS AND METHOD FOR COLLECTING FLY ASH AND FINE DUST Abstract of the Disclosure Fly ash and fine dust in a gas stream from a coalcombustor, for example, are efficiently collect ...