Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Class Information
Number: 229/313
Name: Envelopes, wrappers, and paperboard boxes > Envelope > Having means to facilitate opening the envelope by severing it (e.g., tearing, cutting, piercing, etc.) > Line of weakness
Description: Subject matter wherein the opening means includes a line of reduced strength.










Sub-classes under this class:

Class Number Class Name Patents
229/316 Line of weakness extends along or adjacent envelope side edge 32
229/314 Lines of weakness in opposed walls form removable envelope portion 50


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8562216 Tear away opening for multi-layer plastic pack Oct. 22, 2013
8550333 Apparatus for fastening and/or separating container portions Oct. 8, 2013
8342390 Delivery container for digital disc Jan. 1, 2013
8191763 Reusable envelopes Jun. 5, 2012
8113417 Easy open envelope Feb. 14, 2012
8020751 Apparatus for fastening and/or separating container portions Sep. 20, 2011
7980451 Single-ply pressure seal mailer with removable pull tab Jul. 19, 2011
7798392 Delivery container for digital disc Sep. 21, 2010
7726548 Reusable envelope structures and methods Jun. 1, 2010
7213844 Envelope with integrated tracking labels May. 8, 2007
7178713 Easy open envelope Feb. 20, 2007
7156288 Laminated disc envelope with postcard appearance Jan. 2, 2007
6983875 Apparatus for fastening and separating containers Jan. 10, 2006
6951279 System and apparatus for protecting digital media Oct. 4, 2005
6662995 Envelope and foldable envelope sheet Dec. 16, 2003
6624130 Laundry product Sep. 23, 2003
6588591 Recloseable pack Jul. 8, 2003
6564994 Expandable envelope construction May. 20, 2003
6394500 Tuck label easy opening pull tab May. 28, 2002
6296179 Inside out two-way shipping envelope Oct. 2, 2001
6237844 Inside bangtail envelope May. 29, 2001
6227444 Expandable envelope construction May. 8, 2001
6223977 Easy open envelope May. 1, 2001
6126064 Secure seal sector Oct. 3, 2000
6079615 Mailer assembly Jun. 27, 2000
6032854 Multiple-use sealable packages Mar. 7, 2000
6019280 C-fold return postcard mailer Feb. 1, 2000
6006985 Easy opening envelope with tear panel Dec. 28, 1999
5989382 Utilizing identical staggered pattern forms through fax or printer via offsetting Nov. 23, 1999
5984170 Tear string envelope Nov. 16, 1999
5954431 Transparent security pocket compatible with non-impact printers Sep. 21, 1999
5904290 Easy-to-open recyclable envelope May. 18, 1999
5875964 Reusable business envelope Mar. 2, 1999
5857565 Paperboard envelope for a computer disc or CD which is insertable in a bound publication Jan. 12, 1999
5791556 Easy opening envelope Aug. 11, 1998
5782452 Combination picture post card mailer and display easel Jul. 21, 1998
5738274 Reusable reply envelope Apr. 14, 1998
5722538 Label assembly for package sleeve accommodating a storage media disc and method for sealing a package sleeve Mar. 3, 1998
5683029 Combination sealing and opening strip for packages Nov. 4, 1997
5678756 Envelope Oct. 21, 1997
5645214 Combination envelope and greeting card Jul. 8, 1997
5642855 Composite outgoing mailer and return envelope form Jul. 1, 1997
5570835 Self-reply envelope Nov. 5, 1996
5503328 Multi-use envelope Apr. 2, 1996
5499757 Easy open, tamper evident envelope Mar. 19, 1996
5487826 Cardboard mailer packages Jan. 30, 1996
5467917 Envelope Nov. 21, 1995
5318222 Mailer for computer disks Jun. 7, 1994
5232150 Two way envelope for automated initial use Aug. 3, 1993
5163612 Method of making a mailer with tear strip on outgoing and return envelopes Nov. 17, 1992

1 2










 
 
  Recently Added Patents
Container
ASICs having programmable bypass of design faults
Business flow processing method and apparatus
Solid-state image capture device and image capture apparatus
Vehicles with electric motor
Curable inks comprising surfactant-coated magnetic nanoparticles
Probe for ultrasound diagnostic apparatus
  Randomly Featured Patents
Feed dispenser
Wire section in a paper machine
Flexible music composition engine
Macrocycles useful in the treatment of Alzheimer's disease
Scanner
Ticket segmentation
Gas turbine engine fan variable area nozzle with swivalable insert system
Data separator and signal processing circuit
Placement optimization system aided by CAD
Furniture with a tubular underframe