Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7407469 | Expandable folder An expandable folder (10) is disclosed for holding reports. The folder (10) is formed of a single sheet of material (12). The folder (10) includes a back (14), a front (20), two sides (16, 18) and a flap (22). ... | 08/05/2008 |
| 7185800 | Expandable folder An expandable folder (10) is disclosed for holding reports. The folder (10) is formed of a single sheet of material (12). The folder (10) includes a back (14), a front (20), two sides (16, 18) and a flap (22). ... | 03/06/2007 |
| 6905064 | Expanding file with pocket divider A portable, expandable file section case is equipped with file section dividers, at least some of which are provided with pockets. The file section dividers of the invention are formed of a laterally expansive partition with a pocket attached thereto. The pocket may... | 06/14/2005 |
| 6866183 | Adjustable envelope The invention teaches an envelope with an adjustable dimension to accommodate inserts of varying size. ... | 03/15/2005 |
| 6820799 | Expandable envelope construction A single blank is used to make an expandable envelope construction having four side edges which can expand as the envelope construction is filled to capacity. The blank is provided with horizontal and vertical score lines and fold lines which permit the sides and bo... | 11/23/2004 |
| 6578756 | Filing device A filing device (1), which has a reference cover-forming member (2) having a cover (21), a spine (22), and a back cover (23) integrated in one body, and a movable cover-forming member capable (3) of relative movement with respect to and along the inner su... | 06/17/2003 |
| 6564994 | Expandable envelope construction A single blank is used to make an expandable envelope construction having four side edges which can expand as the envelope construction is filled to capacity. The blank is provided with horizontal and vertical score lines and fold lines which permit the s... | 05/20/2003 |
| 6273470 | Slip resistant file folders Easily and securely gripped slip-resistant file folders including file pockets and hanging folders. The folders comprise a front flap having a top edge, a rear flap connected to the front flap by a folder bottom, the rear flap also having a top edge. A sl... | 08/14/2001 |
| 6227444 | Expandable envelope construction A single blank is used to make an expandable envelope construction having four side edges which can expand as the envelope construction is filled to capacity. The blank is provided with horizontal and vertical score lines and fold lines which permit the s... | 05/08/2001 |
| 6109511 | Transmittal envelope with miter joint corners Transporting items of bulk, i.e., stacked documents or boxed merchandise, which vary in extent from time to time, in an envelope that gives a desired favorable appearance of containing an item of bulk that is greater than the bulk of the item that is actu... | 08/29/2000 |
| 6098872 | Office envelope An office envelope is constructed of at least one flat sheet of stock of uniform thickness throughout folded to form overlying front and back panels and a pocket panel secured to the back panel. The panels are secured together by longitudinally extending ... | 08/08/2000 |
| 5626551 | Greeting card kit and method The present invention is directed to a kit containing the required elements to enable one to manufacture his or her own greeting cards, note cards, and/or envelopes. The invention also relates to a method of manufacturing a greeting card, note card, or an... | 05/06/1997 |
| 5544473 | Protective shipping or mailing envelopes and method of making A first embodiment of the envelope comprises an outer envelope forming an interior, and a packing material secured in the interior of the outer envelope and forming a pocket for receiving an article. This packing material is comprised of a flexible and ex... | 08/13/1996 |
| 5398866 | Collapsible enclosure having foldable side flaps and a non-foldable bottom portion An enclosure such as a letter envelope, a casing, shipping pouch, file for, or the like, is made of paper or similar suitable material to have a front portion (3) and a back portion (4) as well as side flaps (6) and (7). The enclosure may be provided wit... | 03/21/1995 |
| 5362299 | Stamp storage envelope and method of making same A stamp storage envelope is constructed from a single sheet of material which allows for varying the size of the access opening into the storage chamber by how many panels of end walls are overlapped with each other or adjacent front and rear walls. The p... | 11/08/1994 |
| 5280961 | Pocket calendar for greeting or note cards A pocket calendar is disclosed which has a paper blank cut and folded to present a calendar having a pocket therein for receiving a greeting card, note card or the like. The paper blank includes a wall-hanger panel, a back pocket panel adjacent the wall-h... | 01/25/1994 |
| 5092513 | Varient envelope A mailing envelope for being stuffed with a bulky insert comprising a rectangular envelope having cutouts formed in the bottom two corners, the cutouts being cut in a straight line at a 45 degree angle to an edge, and the depth measured along an edge from... | 03/03/1992 |
| 4401257 | Multiple pocket, expandable envelope, and blank and method for forming same A multiple pocket, expandable envelope is formed by folding panels of a planar, unitary blank relative to each other. The envelope has a front, a back, and a pair of intermediate panels hingedly coupled to each other along parallel end edges. A front divi... | 08/30/1983 |
| 4331290 | Multiple pocket, expandable envelope, and blank and method for forming same A multiple pocket, expandable envelope is formed by folding panels of a planar, unitary blank relative to each other. The envelope has two pair of front and back panels hingedly coupled along a common end edge. Each front and back panel includes a front a... | 05/25/1982 |
| 4313558 | Multiple pocket, expandable envelope, and blank and method for forming same A multiple pocket, expandable envelope, and a blank and method of forming the envelope, involve the use of a planar, unitary blank. The envelope has front and back panels and front and back divider panels therebetween to define three pockets within the en... | 02/02/1982 |
| 4274577 | Expansion filing container An expandable filing container which has a front panel, a back panel and an expandable connecting panel connecting the front and back panels. Hinged panels or flaps are positioned inside at each end of the container near the connecting panel. When the con... | 06/23/1981 |
| 4149667 | Dual compartment envelope An improved dual compartment envelope having two vertically extending pockets. The envelope comprises a first sheet which is bent along a fold line to define a front and back panel. An intermediate sheet is placed between the front and back panels and is ... | 04/17/1979 |
| 4089459 | Coin wrapper The disclosure relates to a coin wrapper comprising a sheet of transparent flexible material. The sheet can be snapped to enable it to be formed into a cylinder with predetermined dimensions. Inner circular ridges are provided near both ends of the cylind... | 05/16/1978 |
| 3955749 | Expansible envelope An expansible envelope container, folder, bag and the like formed from a one-piece unitary blank is provided. The envelope includes a front panel and rear panel separated by a bottom panel. Each of the front and rear panels has a flap extending outwardly ... | 05/11/1976 |
