Inventor · disambiguated record
Kurt Ehrat
Also filed as: EHRAT KURT
14 granted patents·420 citations·filing 1964–1983
94Inventor score
Top patents by PatentIndex Score
14 records- 0197US3990558AMethod and apparatus for preparing and assessing payment documentsGRETAG AG·Filed 1974·Granted Nov 9, 1976·110 cites·8 claims
- 0296US4145568AMethod and apparatus for ciphering and deciphering messagesGRETAG AG·Filed 1964·Granted Mar 20, 1979·68 cites·14 claims
- 0387US4145569AMethod and apparatus for synchronizing the ciphering and deciphering of binary-coded messagesGRETAG AG·Filed 1964·Granted Mar 20, 1979·28 cites·27 claims
- 0487US4131879AMethod and apparatus for determining the relative positions of corresponding points or zones of a sample and an orginalGRETAG AG·Filed 1977·Granted Dec 26, 1978·39 cites·30 claims
- 0586US3959592AMethod and apparatus for transmitting and receiving electrical speech signals transmitted in ciphered or coded formGRETAG AG·Filed 1973·Granted May 25, 1976·34 cites·35 claims
- 0679US4361757ACard-like data carrierZEAG SYSTEMS AG·Filed 1981·Granted Nov 30, 1982·58 cites·24 claims
- 0766US4139779AMethod of assessing a printed articleGRETAG AG·Filed 1977·Granted Feb 13, 1979·15 cites·19 claims
- 0863US4143279AMethod and apparatus for testing the print quality of printed texts, more particularly banknotesGRETAG AG·Filed 1977·Granted Mar 6, 1979·14 cites·31 claims
- 0960US4303832AProcess for assessing the quality of a printed productGRETAG AG·Filed 1979·Granted Dec 1, 1981·10 cites·12 claims
- 1055US4566694AMagnetic gameEHRAT KURT·Filed 1983·Granted Jan 28, 1986·13 cites·41 claims
- 1149US4534195AMechanical lock having a variable keyGRETAG AG·Filed 1983·Granted Aug 13, 1985·13 cites·13 claims
- 1249US4030325ALockKESO AG·Filed 1975·Granted Jun 21, 1977·10 cites·12 claims
- 1337US4362930AData carrier cardZEAG SYSTEMS A G·Filed 1981·Granted Dec 7, 1982·6 cites·33 claims
- 1428US4300298AApparatus for the production and display of moving picturesEHRAT KURT·Filed 1978·Granted Nov 17, 1981·2 cites·38 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →