Helical Dynamics, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 4130
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5658373 Air cleaning methods for mechanical industrial processDec 06, 95Aug 19, 97[B01D]
5637124 Modular air cleaning systemMar 23, 95Jun 10, 97[B01D]
5634845 Method for sizing a source capture system for an air cleaning systemSep 29, 95Jun 03, 97[B08B]
5622538 Source capture sytem for an air cleaning systemMar 28, 95Apr 22, 97[B01D]
5613990 Air cleaning system for mechanical industrial processesMar 28, 95Mar 25, 97[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5669947 Latch for modular air handling systemExpiredDec 21, 95Sep 23, 97[B01D]
5656049 Separator suspension system for a modular air handling systemExpiredDec 21, 95Aug 12, 97[B01D]
5651803 Modular air-handling system with sealing devicesExpiredDec 21, 95Jul 29, 97[B01D]
5641331 Filter suspension system for a modular air handling systemExpiredDec 21, 95Jun 24, 97[B01D]
4460386 Method of separating foreign matter from a gasExpiredSep 30, 82Jul 17, 84[B01D]
4382807 Apparatus for separating foreign matter from a gas with a heat exchangerExpiredAug 10, 81May 10, 83[B01D]
4364754 Apparatus for separating foreign matter from a gas with a heat exchangerExpiredApr 13, 81Dec 21, 82[B01D]
4350504 Air cleaning systemExpiredJan 28, 80Sep 21, 82[F24C]
4216003 Gas cleaning systemExpiredNov 16, 78Aug 05, 80[B01D]

Top Inventors for This Owner

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