NATIONAL GYPSUM COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
E04C STRUCTURAL ELEMENTS; BUILDING MATERIALS 125

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0030,078 LIGHTWEIGHT CEMENTITIOUS PANEL POSSESSING HIGH DURABILITYOct 17, 16Feb 02, 17[E04C]
2015/0076,726 PROCESS FOR EXPANDING SMALL DIAMETER POLYSTYRENE BEADS FOR USE IN CEMENTITIOUS BOARDSep 16, 13Mar 19, 15[B29C]

Recent Patents

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5749192 Corner clips for horizonal framingExpiredSep 13, 96May 12, 98[F24F]
5431279 Wallboard bundling tape and methodExpiredJul 11, 94Jul 11, 95[B65D]
5398176 Multifunctional lamp and supportExpiredApr 19, 93Mar 14, 95[F21V]
5345739 Wallboard attachmentExpiredJun 04, 93Sep 13, 94[E04B]
5107651 Method of mounting wallboardExpiredJun 21, 91Apr 28, 92[E04B]
5079884 Extendible interconnected Z-studsExpiredJun 04, 90Jan 14, 92[E04H]
5058354 Panels with laminated strips for clipsExpiredOct 01, 90Oct 22, 91[E04B]
5058355 Panels with laminated strips for clipsExpiredJul 09, 90Oct 22, 91[E04B]
4969380 Gypsum board grooving systemExpiredNov 27, 89Nov 13, 90[B26D]
4897978 Panel edge alignment clipExpiredNov 21, 88Feb 06, 90[E04F]
4845904 C-stud and wedged bracketExpiredJun 06, 88Jul 11, 89[A47G]
4843771 Wall trim memberExpiredJun 29, 88Jul 04, 89[E04F]
4837988 Universal secondary studExpiredJan 29, 88Jun 13, 89[E04B, A47G]
4763455 Interior corner drywall beadExpiredJun 16, 83Aug 16, 88[E04B]
4747240 Encapsulated PCM aggregateExpiredAug 06, 81May 31, 88[F04B, F24D]
4741929 Roll-coating method and apparatusExpiredMar 19, 87May 03, 88[B05C, B05D]
4725078 Wallboard identification systemExpiredJun 30, 86Feb 16, 88[D42D]
4700515 Wall panel leveling support clipExpiredJan 23, 87Oct 20, 87[E04B]
4693047 Bendable channel retainerExpiredJun 30, 86Sep 15, 87[A43B, E04H]
4689930 Partition structureExpiredMay 29, 86Sep 01, 87[E04B]

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