D21H 21/54
Being spherical
Official title: being spherical, e.g. microcapsules, beads
D21H21/54 (Being spherical) appears on 165 US grants and 167 published applications in this corpus.
Search patents in D21H- Granted patents
- 165
- Published applications
- 167
- Assignees
- 111
- Inventors
- 369
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 6 |
| 2003 | 5 | 10 |
| 2004 | 4 | 10 |
| 2005 | 4 | 10 |
| 2006 | 2 | 11 |
| 2007 | 3 | 11 |
| 2008 | 1 | 13 |
| 2009 | 3 | 5 |
| 2010 | 7 | 14 |
| 2011 | 12 | 10 |
| 2012 | 7 | 4 |
| 2013 | 8 | 8 |
| 2014 | 6 | 9 |
| 2015 | 1 | 7 |
| 2016 | 3 | 2 |
| 2017 | 7 | 8 |
| 2018 | 5 | 5 |
| 2019 | 5 | 5 |
| 2020 | 6 | 5 |
| 2021 | 3 | 2 |
| 2022 | 5 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and compositions related to lanthanide-encoded microbeads11 Aug 2026US 12,702,963 B2CZ Biohub SF, LLC
- Preparation method of eco-friendly long-lasting heat-sensitive paper13 Jan 2026US 12,522,982 B2Jiangxi Heshuofeng New Material Co., Ltd.
- Waterborne adhesives for reduced basis weight multilayer substrates and use thereof30 Apr 2024US 11,970,634 B2Henkel AG & Co. KGaA
- Web, stampable sheet, and expansion molded product5 Mar 2024US 11,920,015 B2K-Plasheet Corporation
- Adhesive having insulative properties16 May 2023US 11,649,589 B2Henkel AG & Co. KGaA
- Hollow sphere pigments disposed on a substrate16 Jul 2026US 2026/0201643 A1Rohm and Haas Company
- Sheet manufacturing apparatus26 Mar 2026US 2026/0085471 A1Seiko Epson Corporation
- Paper roll as fragrance control release system9 Oct 2025US 2025/0314016 A1
- Zein coated or impregnated paper straws and related tublar article27 Mar 2025US 2025/0098882 A1Kalykos LLC
- Preparation method of eco-friendly long-lasting heat-sensitive paper21 Nov 2024US 2024/0384473 A1Jiangxi Heshuofeng New Material Co., Ltd.
Most cited
By later US patents
- Bulk enhanced paperboard and shaped products made therefrom117US 6,379,497 B1Fort James Corporation · 2002
- Coated paperboards and paperboard containers having improved tactile and bulk insulation properties117US 6,740,373 B1Fort James Corporation · 2004
- Coated paperboards and paperboard containers having improved tactile and bulk insulation properties92US 6,919,111 B2Fort James Corporation · 2005
- Syntactic foam insulated container87US 5,952,068 AInsulation Dimension Corporation · 1999
- Method for the production of fibre composite materials impregnated with resin82US 4,483,889 AKemaNord AB · 1984