B31D

Making articles of paper, cardboard or material worked in a manner analogous

Official title: MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C (manufacture by dry processes of articles made from particles or fibres consisting of wood or other lignocellulosic or like organic material B27N; making layered products not composed wholly of paper or cardboard B32B; making articles from cellulosic fibrous suspensions, e.g. wood pulp, D21J)

B31D (Making articles of paper, cardboard or material worked in a manner analogous) appears on 2,284 US grants and 2,142 published applications in this corpus.

Search patents in B31D

Granted patents: 2,284
Published applications: 2,142
Assignees: 954
Inventors: 3,027
Latest grant: 29 Sep 2026

Filings by year

B31D: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	21	0
1977	14	0
1978	19	0
1979	14	0
1980	17	0
1981	19	0
1982	7	0
1983	5	0
1984	6	0
1985	15	0
1986	21	0
1987	22	0
1988	26	0
1989	31	0
1990	27	0
1991	30	0
1992	37	0
1993	39	0
1994	42	0
1995	37	0
1996	54	0
1997	64	0
1998	71	0
1999	61	0
2000	57	0
2001	52	18
2002	37	46
2003	44	41
2004	40	76
2005	27	67
2006	42	103
2007	35	69
2008	34	75
2009	30	69
2010	56	76
2011	49	79
2012	40	71
2013	54	79
2014	54	99
2015	54	93
2016	72	82
2017	54	92
2018	65	103
2019	69	111
2020	93	107
2021	88	119
2022	104	122
2023	90	122
2024	106	91
2025	77	82
2026	62	50

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Making articles of paper, cardboard or material worked in a manner analogous

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