US 11,718,121 B2
Spiral-shaped adhesive notepads and methods and devices for making them
James E. Nash, Bloomington, MN (US); and Douglas P. Bodziak, Lake Elmo, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Appl. No. 17/294,515
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Nov. 8, 2019, PCT No. PCT/IB2019/059617
§ 371(c)(1), (2) Date May 17, 2021,
PCT Pub. No. WO2020/104883, PCT Pub. Date May 28, 2020.
Claims priority of provisional application 62/770,254, filed on Nov. 21, 2018.
Prior Publication US 2022/0016922 A1, Jan. 20, 2022
Int. Cl. B42D 5/00 (2006.01)
CPC B42D 5/005 (2013.01) 18 Claims
OG exemplary drawing
 
1. A notepad comprising:
a plurality of sheets arranged into a stack, each sheet having a first major face and a second major face, each of the first and second major faces terminating at a perimeter edge; and
an adhesive disposed on at least a portion of the second major face of each sheet such that the portion of the second major face of each sheet releasably adheres to a corresponding portion of the first major face of an underlying sheet, wherein the adhesive on the portion of the second major face lies at least partially adjacent to a portion of the perimeter edge of a corresponding sheet, the portion of the perimeter edge of each sheet forming a releasably bonded side of the stack; and
wherein the stack is twisted about a common central axis of the plurality of sheets present therein such that the notepad has a spiral shape.