John Brown Inc.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

  • No Technology to Display

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

  • No Recent Patents to Display

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5263839 Apparatus for sensing the temperature of a thermoplastic sheet in a differential pressure forming machineExpiredNov 05, 91Nov 23, 93[B29C]
5225213 Apparatus for differential pressure forming and trimmingExpiredDec 16, 91Jul 06, 93[B29C]
5211346 Automatic winding unitExpiredApr 26, 88May 18, 93[B65H]
5209415 Air tension for take-upsExpiredApr 17, 89May 11, 93[B65H]
5199340 Mechanical parts ejector for trim pressExpiredMay 24, 91Apr 06, 93[B26D]
5192032 Automatic winding unitExpiredOct 31, 90Mar 09, 93[B65H]
5190230 Non-catenary tow winderExpiredSep 23, 91Mar 02, 93[B65H]
5141631 Polymer filter with backflush pumpExpiredJun 07, 91Aug 25, 92[B01D]
5072889 Take-up mechanismExpiredJun 11, 87Dec 17, 91[B65H]
5035373 Constant contact lay-on roll winderExpiredApr 08, 86Jul 30, 91[B65H]
5002479 Apparatus for adjusting the shut height of a mold in a differential pressure forming machineExpiredMay 30, 89Mar 26, 91[B29C]
4932595 Size reduction system for plastic articlesExpiredFeb 22, 89Jun 12, 90[B02C]
4890524 Trim press with counterbalanceExpiredAug 31, 88Jan 02, 90[B26D]
4854844 Die-lip adjusting mechanismExpiredJun 29, 88Aug 08, 89[B29C]
4735370 Take-up mechanismExpiredJul 31, 87Apr 05, 88[B65H]
4676938 Differential pressure thermoforming and foam injection process and apparatusExpiredJan 15, 86Jun 30, 87[B29C]
4666544 Thermoforming methodsExpiredSep 16, 85May 19, 87[B32B]
4636348 System for thermoforming articles such as picnic plates in a pair of simultaneously fed, continuous thermoplastic webs which subsequently move into nested relation, and then dually trimming the nested articles from the websExpiredFeb 19, 85Jan 13, 87[B29C]
4623826 Stall protection circuit for brushless motor controlExpiredJul 31, 84Nov 18, 86[H02P]
4608009 Thermoforming equipment for differential pressure forming products in thermoplastic materialExpiredMay 23, 84Aug 26, 86[B29C]

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!.