PURITAN-BENNETT CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
A61M DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY 17137
 
 
 
A62B DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING 1027
 
 
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING667
 
 
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 3237
 
 
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 398
 
 
 
C09B ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES 241
 
 
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
 
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 282
 
 
 
F16M FRAMES, CASINGS, OR BEDS, OF ENGINES OR OTHER MACHINES OR APPARATUS, NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS OR SUPPORTS134

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6299581 Method and apparatus for optimizing the continuous positive airway pressure for treating obstructive sleep apneaMay 10, 96Oct 09, 01[A62B]
6116240 Gas mixing apparatus for a ventilatorMar 26, 99Sep 12, 00[A62B, A61M]
5934274 Gas mixing apparatus for a ventilatorJun 18, 97Aug 10, 99[A61M]
5915382 Piston based ventillatorAug 21, 97Jun 29, 99[A61M]
5909731 Lung ventilator safety circuitDec 06, 96Jun 08, 99[A61M]
5813399 System and method for closed loop airway pressure control during the inspiratory cycle of a breath in a patient ventilator using the exhalation valve as a microcomputer-controlled relief valveJan 10, 97Sep 29, 98[F16K, A62B, A61M]
5673689 Piston based ventilatorAug 27, 96Oct 07, 97[A61M]
5664560 Gas mixing apparatus for a ventilatorJul 31, 96Sep 09, 97[A61M]
5660171 System and method for flow triggering of pressure supported ventilation by comparison of inhalation and exhalation flow ratesAug 21, 96Aug 26, 97[F16K, A62B, A61M]
5632270 Method and apparatus for control of lung ventilator exhalation circuitSep 12, 94May 27, 97[A61M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6793629 Method and apparatus for optimizing the continuous positive airway pressure for treating obstructive sleep apneaExpiredNov 07, 02Sep 21, 04[A61B]
5452621 Ultrasonic gas measuring device incorporating efficient displayExpiredJun 03, 94Sep 26, 95[G01N]
5369979 Ultrasonic gas measuring device incorporating efficient displayExpiredMar 24, 94Dec 06, 94[G01N]
5339671 Calibration cuvetteExpiredMay 22, 92Aug 23, 94[G01N, G01D]
5330718 Sensor element and method for making the sameExpiredOct 14, 92Jul 19, 94[G01N]
5326531 CO.sub.2 sensor using a hydrophilic polyurethane matrix and process for manufacturingExpiredDec 11, 92Jul 05, 94[G01N]
5326585 Method and compositions for manufacture of chemical sensorsExpiredAug 17, 93Jul 05, 94[B05D, G02B]
5313820 Ultrasonic gas measuring deviceExpiredMar 01, 93May 24, 94[G01N]
5271073 Optical fiber sensor and method of manufactureExpiredAug 10, 90Dec 14, 93[G01N, G02B]
5266271 Microsensor copolymer and method of manufactureExpiredMay 22, 92Nov 30, 93[G01N]
5262192 Method and compositions for manufacture of chemical sensorsExpiredApr 27, 92Nov 16, 93[B05D, G02B]
5246859 Method of stabilizing a carbon dioxide sensorExpiredMay 22, 92Sep 21, 93[G01N]
5242315 Electrical-optical hybrid connector plugExpiredMay 21, 92Sep 07, 93[H01R]
5219527 Sensor element and method for making the sameExpiredAug 28, 91Jun 15, 93[G01N]
5212092 Storage and calibration solution for multiparameter intravascular blood gas sensor deviceExpiredMay 22, 92May 18, 93[G01N, A61B, G01C]
5205322 Method and apparatus for flow control for sensor calibrationExpiredJun 17, 92Apr 27, 93[F16K]
5204265 Method of stabilizing a carbon dioxide sensorExpiredAug 21, 92Apr 20, 93[G01N, A61B, G01C]
5204922 Optical signal channel selectorExpiredOct 22, 91Apr 20, 93[G02B]
5187970 Calibration cuvetteExpiredDec 16, 91Feb 23, 93[G01D]
5187971 Calibration cuvetteExpiredAug 10, 90Feb 23, 93[G01N, G01D]

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