B43K 19/18
Making pencil writing-cores
B43K19/18 (Making pencil writing-cores) appears on 39 US grants and 51 published applications in this corpus.
Search patents in B43K- Granted patents
- 39
- Published applications
- 51
- Assignees
- 23
- Inventors
- 72
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 2 | 3 |
| 2014 | 2 | 2 |
| 2015 | 2 | 3 |
| 2016 | 1 | 1 |
| 2017 | 3 | 3 |
| 2018 | 2 | 2 |
| 2019 | 3 | 3 |
| 2020 | 2 | 1 |
| 2021 | 2 | 7 |
| 2022 | 0 | 1 |
| 2023 | 3 | 5 |
| 2024 | 4 | 2 |
| 2025 | 0 | 3 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coloring pencil lead for synthetic pencil based on biopolymers blends28 Jul 2026US 12,691,703 B2Societe BIC
- Graphite lead or graphite chalk or graphite block, pencil with graphite lead, and method for producing a graphite lead or graphite chalk or graphite block26 Nov 2024US 12,152,158 B2Faber-Castell AG
- Erasable writing compositions24 Sep 2024US 12,097,722 B2Crayola LLC
- Method for producing powder leads and products produced therewith13 Aug 2024US 12,059,484 B2Schwan-Stabilo Cosmetics GmbH & Co.KG
- Core or crayon for writing and/or coloring11 Jun 2024US 12,006,443 B2Faber-Castell AG
- Systems and methods for recycling waste material from a pencil27 Aug 2026US 2026/0249640 A1
- Core for writing, drawing and/or painting implements and methods for the production thereof9 Jul 2026US 2026/0192591 A1Staedtler SE
- Colored pencil lead, graphite lead, colored or graphite chalk18 Jun 2026US 2026/0167834 A1
- Non-baked pencil lead18 Jun 2026US 2026/0167839 A1Mitsubishi Pencil Company, Limited
- Tinder pencil11 Jun 2026US 2026/0158814 A1Outdoor Element, LLC
Most cited
By later US patents
- Non-baked color pencil leads and method for preparing same19US 5,595,700 AMitsubishi Pencil Company, Limited · 1997
- Ergonomic writing instrument17US 5,893,671 A1999
- Baked color pencil lead and method of manufacturing the same15US 5,595,589 AMitsubishi Pencil Company, Limited · 1997
- Process and installation for the manufacture of pencils8US 5,531,947 ABellaform Extrusionstechnik GmbH · 1996
- Colour pencil lead7US 9,988,546 B2Conte · 2018