RAILWAY TECHNICAL RESEARCH INSTITUTE

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 866
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 678
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 5357
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM4153
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 487
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 266
 
  
 
E01B PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS 220
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 268
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 2105
 
  
 
A01C PLANTING; SOWING; FERTILISING 129

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9721708 High-temperature superconducting coil and method of manufacturing sameNov 21, 14Aug 01, 17[H01B, H01F]
9394953 Brake lining for railway vehicles and disc brake equipped with the sameMay 31, 12Jul 19, 16[B61H, F16D]
9169883 Caliper brake device for vehicleOct 10, 08Oct 27, 15[B61H, F16D]
8875849 Caliper brake deviceAug 23, 10Nov 04, 14[F16D]
8880135 Low alternating-current loss oxide superconductor and fabricating method thereofNov 16, 06Nov 04, 14[H01L, H01B]
8228148 Annular magnet system for magnetic resonance spectroscopyDec 22, 10Jul 24, 12[G01R, H01F]
8001854 Analytical sample drying method and drying apparatusFeb 29, 08Aug 23, 11[G01N]
7859374 Annular magnet system for magnetic resonance spectroscopyOct 03, 06Dec 28, 10[G01R]
7405922 Double layer capacitorFeb 06, 06Jul 29, 08[H01G]
7394338 Superconducting coilJan 12, 06Jul 01, 08[H01F]

View all patents..

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0167,047 WATERPROOF SHEET FOR TUNNELAbandonedJun 04, 07Jul 01, 10[B32B]
7718573 Method for producing oxide superconductor, oxide superconductor and substrate material for supporting precursor of the sameExpiredJan 22, 04May 18, 10[H01L]
2004/0224,851 Oxide superconductor, manufacturing method therefor, and base substrate thereforAbandonedApr 26, 04Nov 11, 04[H01B, B32B]
6743533 Oxide superconductor, manufacturing method thereof, and base substrate thereforExpiredDec 11, 01Jun 01, 04[H01L, H01B, H01F]
6722088 Elevated bridge infrastructure and design method for designing the sameExpiredMay 08, 02Apr 20, 04[E04B]
6543077 Elevated bridge infrastructure and design method for designing the sameExpiredMay 08, 02Apr 08, 03[G06F, E04H]
6518718 Speed electromotive force phase control system adapted to low speedExpiredMar 23, 01Feb 11, 03[H02P]
6515440 Departure control system using simulated phaseExpiredMar 23, 01Feb 04, 03[H02P]
6425157 Elevated bridge infrastructure design methodExpiredMay 31, 00Jul 30, 02[E01D]
6121205 Bulk superconductor and process of preparing sameExpiredMay 13, 97Sep 19, 00[H01L]
5989896 Method for degrading polychlorinated biphenyls and novel microorganismExpiredAug 05, 98Nov 23, 99[C12N, B09B]
5920246 Superconductive composite materialsExpiredMar 19, 97Jul 06, 99[H01F]
5897996 Method for degrading polychlorinated biphenyls and novel microorganismExpiredMar 26, 98Apr 27, 99[C12N, B09B]
5698913 Outer-rotor type electric rotary machine and electric motor vehicle using the machineExpiredJun 13, 96Dec 16, 97[H02K]
5663501 Method and apparatus for determining seismic vulnerability of a structureExpiredJun 20, 96Sep 02, 97[G01M]
5657697 Coils for magnetic levitation apparatusExpiredFeb 01, 96Aug 19, 97[B60L]
5628253 Ground-propulsion special-purpose electromagnetic circuit for magnetically levitated railway, and method of laying said circuitExpiredMar 14, 96May 13, 97[B60L]
5593175 Leg apparatus for the magnetically levitated vehicleExpiredMay 22, 95Jan 14, 97[B60G]
5578756 Method and apparatus for evaluating soundness of block-like structuresExpiredApr 18, 95Nov 26, 96[G01M]
5575155 Cooling systemExpiredAug 17, 95Nov 19, 96[F25B]

View all patents..

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.