Langdon Incorporated

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL466
 
  
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 342
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 254
 
  
 
0808 FASTENING, SUPPORTING OR MOUNTING DEVICES NOT INCLUDED IN OTHER CLASSES218

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9551505 Damper access assembly, clamp assembly, and clamp memberDec 07, 12Jan 24, 17[F24F]
9341291 Damper access assemblyJun 05, 12May 17, 16[F16L, F24F]
D737133 Clamping memberDec 07, 12Aug 25, 15[0808]
D736072 Clamping memberDec 07, 12Aug 11, 15[0808]
8584497 Flange-forming system for tube and related methodsAug 15, 11Nov 19, 13[B21D]
8322758 Tube coupling and related methodsOct 23, 09Dec 04, 12[F16L]
7997112 Flange-forming system for tube and related methodsSep 27, 07Aug 16, 11[B21D]
7523964 Sealing gasket for ventilation duct systemMar 24, 05Apr 28, 09[F16L]
D534253 GasketMar 24, 05Dec 26, 06[]
D529598 Portion of ductworkMar 24, 05Oct 03, 06[]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0296,894 FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODSAbandonedAug 15, 11Dec 08, 11[B21D]
2009/0085,349 DUCT SYSTEMS AND RELATED METHODSAbandonedJul 03, 08Apr 02, 09[F16L]
2009/0083,962 FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODSAbandonedNov 13, 08Apr 02, 09[F16L, B23P, F24F]

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