Writing instrument comprising a switchable flow material
US11884092B2 · kind B2 · utility
0Cited by
19References
19Claims
0Family size
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Key dates
| Filing date | Dec 9, 2021 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Mar 4, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K8/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present disclosure relates to a writing instrument comprising a tubular body, a reservoir for an ink composition. The writing instrument comprises a nib comprising a switchable flow material, wherein the switchable flow material is configured to switch between a fluid flow preventing condition and a fluid flow enabling condition by a stimulus. The switchable flow material is configured to control flow of the ink composition from the reservoir to or towards a writing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.