RAYMOND KAISER ENGINEERS INC., A CORP OF OHIO

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4596197 Coke oven doorExpiredJan 10, 85Jun 24, 86[F23M]
4527488 Coke oven charging carExpiredApr 26, 83Jul 09, 85[B61D]
4510959 Method for installation of an extended headerExpiredFeb 21, 84Apr 16, 85[F16L]
4511264 Gas temperature monitoring deviceExpiredApr 11, 83Apr 16, 85[G01K]
4489747 Apparatus for extending a headerExpiredMay 06, 82Dec 25, 84[F16L]
4486138 Pusher ramExpiredAug 26, 82Dec 04, 84[C10B]
4486139 Pusher ramExpiredAug 26, 82Dec 04, 84[C10B]
4478575 Blast furnace stove outletExpiredJun 30, 83Oct 23, 84[F28C, C21B]
4475989 Insulating charging hole coverExpiredMar 28, 83Oct 09, 84[C10B]
4452670 Method and apparatus for recovering preheater coal finesExpiredJun 09, 80Jun 05, 84[C10B]
4445628 Apparatus for sensing empty hoppersExpiredDec 24, 81May 01, 84[F27D]
4444555 Method for reducing stress corrosion cracking in high-temperature regenerative air heatersExpiredApr 26, 82Apr 24, 84[F24H, C21B]
4435250 Device for adjusting the position of a track mounted carExpiredMay 06, 82Mar 06, 84[B61L, B61B, C10B]
4426259 Coke oven door sealExpiredMay 06, 82Jan 17, 84[C10B]
4424099 Process for control of coke oven emissionsExpiredAug 27, 82Jan 03, 84[C10B]
4419075 Blast furnace stove wallExpiredNov 19, 81Dec 06, 83[C21B]
4417952 Apparatus for cleaning coke oven doorsExpiredDec 28, 81Nov 29, 83[C10B]
4416688 Direct reduction of ores and concentration of metallic valuesExpiredJan 28, 82Nov 22, 83[C22B]
4412579 Apparatus for handling a continuous casting machine starter barExpiredMay 07, 82Nov 01, 83[B22D]
4407352 High efficiency coke oven regenerator checker brickExpiredMay 06, 82Oct 04, 83[F28D]

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