Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:allows |
A method of producing a coreless toilet paper roll by winding a web of paper into a roll and forming a hollow at the center by removing the core after winding.
|
| gptkbp:application |
US06/920,370
|
| gptkbp:assignee |
gptkb:Oji_Paper_Co_Ltd
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:filingDate |
1978-06-19
|
| https://www.w3.org/2000/01/rdf-schema#label |
US4237224A
|
| gptkbp:inventedBy |
gptkb:Yoshiharu_Sato
|
| gptkbp:priorityDate |
1977-06-20
|
| gptkbp:publicationDate |
1980-12-09
|
| gptkbp:status |
granted
|
| gptkbp:title |
Method of producing a coreless toilet paper roll
|
| gptkbp:bfsParent |
gptkb:Cohen-Boyer_patents
|
| gptkbp:bfsLayer |
7
|