QUIXOTE CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01F ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE218

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6289634 Crossing guardMay 09, 00Sep 18, 01[E01F]
6115963 Crossing guardSep 23, 98Sep 12, 00[E01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6062766 Raised pavement markerExpiredAug 04, 97May 16, 00[E01F]
5495527 Telephone privacy deviceExpiredJun 10, 94Feb 27, 96[H04M]
4963367 Drug delivery compositions and methodsExpiredDec 15, 87Oct 16, 90[A61K, B01J]
4963526 Oral insulin and a method of making the sameExpiredNov 02, 88Oct 16, 90[A61K]
4914084 Composition and method for introducing heme, hemoproteins, and/or heme-hemoprotein complexes into the bodyExpiredMar 26, 87Apr 03, 90[A61K]
4874742 Synthetic whole blood and a process for preparing the sameExpiredSep 15, 87Oct 17, 89[A61K]
4853370 Substitute for human blood and a method of making the sameExpiredApr 15, 88Aug 01, 89[A61K]
4849405 Oral insulin and a method of making the sameExpiredMar 03, 86Jul 18, 89[A61K]
4794000 Coacervate-based oral delivery system for medically useful compositionsExpiredJan 08, 87Dec 27, 88[A61K]
4738952 Substitute for human blood and a method of making the sameExpiredDec 20, 85Apr 19, 88[A61K]
4694280 Keyboard entry systemExpiredApr 25, 86Sep 15, 87[G08C, G06F]
4638306 Keyboard entry systemExpiredJan 30, 84Jan 20, 87[G08C, G06F]
4558032 Synthetic whole blood substitute and a method of making the sameExpiredJun 29, 83Dec 10, 85[A61K]
4547490 Synthetic whole blood and a method of making the sameExpiredJul 12, 83Oct 15, 85[A61K]
4539204 Gelatin based synthetic blood and a method of making the sameExpiredFeb 07, 83Sep 03, 85[A61K]
4509162 High density recording mediumExpiredDec 13, 82Apr 02, 85[G11B]
4423137 Contact printing and etching method of making high density recording mediumExpiredJul 31, 81Dec 27, 83[H04N, G03C, G11B, G01D]
D266634 Juvenile seatExpiredOct 28, 80Oct 26, 82[D060]
4343797 Synthetic whole blood and a method of making the sameExpiredJan 05, 81Aug 10, 82[A61K]

Top Inventors for This Owner

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