Dental Composite Material - Kulzer GmbH - US12605307B2
Summary
The USPTO granted patent US12605307B2 to Kulzer GmbH on April 21, 2026, covering a polymerisable dental composite material comprising 40-90% inorganic filler, 10-60% urethane (alkyl) acrylate, 0.01-15% functional monomers, and 0.01-10% initiator/stabiliser. The patent, originating from application 17773261 (filed October 29, 2020), contains 8 claims and names inventors Andreas Utterodt, Christoph Meier, Nelli Schoenhof, Jutta Schneider, Kurt Reischl, Raif Kocoglu, and Michael Eck. The patent covers both the unpolymerised composite and the polymerised material for direct or indirect dental restorations.
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GovPing monitors USPTO Patent Grants - Pharma (A61K) for new healthcare & life sciences regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 22 changes logged to date.
What changed
The USPTO granted patent US12605307B2 to Kulzer GmbH on April 21, 2026. The patent covers a polymerisable dental composite material with a specific formulation: 40-90% inorganic filler (dental glass ± amorphous metal oxide), 10-60% urethane (alkyl) acrylate, 0.01-15% non-urethane functional monomers, and 0.01-10% initiators/stabilisers/pigments. CPC classifications include A61K 6/893, A61K 6/887, and C08L 33/08/10.
For dental material manufacturers and dental laboratories, this grant confers exclusive rights to Kulzer GmbH for the claimed composite formulation in the United States. Competitors developing similar urethane-acrylate-based dental composites should conduct freedom-to-operate analyses to assess potential infringement exposure. Dental product companies licensing or acquiring similar technology should verify that the licensed formulation does not overlap with the protected composition-of-matter claims.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Dental composite material
Grant US12605307B2 Kind: B2 Apr 21, 2026
Assignee
Kulzer GmbH
Inventors
Andreas Utterodt, Christoph Meier, Nelli Schoenhof, Jutta Schneider, Kurt Reischl, Raif Kocoglu, Michael Eck
Abstract
The invention relates to a polymerisable dental composite material comprising
(i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal oxide,(ii) 10 to 60% by weight of at least one urethane (alkyl) acrylate of the idealised formula I,(iii) 0.01 to 15% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane (alkyl) acrylate,(iv) 0.01 to 10% by weight of at least one initiator, of an initiator system, as well as optionally of at least one stabiliser, and optionally of at least one pigment, the total composition of the composite material amounting to 100% by weight, as well as to a polymerised composite material for producing direct dental restorations or indirect dental restorations.
CPC Classifications
A61K 6/893 A61K 6/887 A61K 6/76-79 C08L 33/08 C08L 33/10
Filing Date
2020-10-29
Application No.
17773261
Claims
8
Parties
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