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Company patents

HISAMITSU PHARMACEUTICAL CO., INC.

HISAMITSU PHARMACEUTICAL CO., INC. demonstrates a strong focus on "Pharmaceutical Preparations," accounting for 66.7% of its portfolio, yet shows a surprising -100.0% decline so far in 2026 after a significant +44.4% growth in 2025. Concurrently, "Drug Delivery Devices" saw a remarkable +400.0% growth in 2025, indicating an emerging emphasis on advanced delivery methods despite a -80.0% decline so far in 2026.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

48 US filings (since 2023) · 9 categories · 8 themes

Targeted Drug Formulation Delivery

Delivery systems specifically engineered to administer advanced drug formulations (e.g., microparticles, biologics, extended-release systems) to achieve precise targeting, controlled release kinetics, or enhanced therapeutic efficacy within the body.

Pharmaceutical PreparationsDrug Delivery Devices
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9since 2023
0.0%YoY
Automated Injector Mechanisms

Mechanical or electromechanical systems designed for precise, often self-administered, delivery of medicaments, including features for dose setting, needle insertion/retraction, and safety mechanisms to prevent premature activation.

Drug Delivery Devices
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4since 2023
+100.0%YoY
Hot-Melt Adhesive Formulations

Development of adhesive compositions that are applied in a molten state and solidify upon cooling, focusing on specific polymer blends, additives, and their resulting mechanical or optical properties.

Adhesives
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3since 2023
new
High-Barrier Packaging Films

Multi-layer polymer films engineered to provide superior barrier properties against gases (e.g., oxygen), moisture, or aromas, often incorporating heat-sealing or resealing mechanisms for food and product preservation.

Containers & PackagingLayered Products (Laminates, Films)
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3since 2023
n/a
Battery Electrode Binders

Adhesive compositions specifically formulated to bind active materials within battery electrodes, emphasizing properties like electrolyte resistance, adhesion to current collectors, and processability for manufacturing.

Adhesives
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2since 2023
new
Sustainable & Reversible Adhesives

Adhesive technologies focused on environmental benefits such as biodegradability, natural origin, or designed for easy debonding and re-bonding to facilitate recycling, reuse, or specific application needs.

Adhesives
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2since 2023
new
Thermally Conductive Additives

Materials added to polymers to modify their thermal transfer properties, typically increasing conductivity for heat dissipation in applications like electronics or battery packs.

Polymer Additives
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1since 2023
new
Flexible Electronic Films & Electrodes

Thin, multi-layered films and structures specifically designed for electronic applications, including flexible substrates for devices, display panel components, and active material layers for battery electrodes.

Layered Products (Laminates, Films)
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1since 2023
n/a

Patents

Showing 1-10 of 93

Page 1 of 10
US 20260151609 A1APPLICATION
A61M37/00

MICRONEEDLE SHEET AND APPLICATOR

Filed:2025-12-18Pub:2026-06-04
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

A method includes: preparing a microneedle sheet including a sheet body having a main surface, and at least one microneedle formed on the sheet body and lying along the main surface, each of the at least one microneedle having a base positioned on a first side of the sheet body and a tip oriented toward a second side of the sheet body that is opposite to the first side; before bending the first portion of the sheet body, bringing a side surface of the microneedle positioned in the first portion into contact with skin; bending the first portion from the first side, thereby raising the microneedle positioned in the first portion from the main surface; and applying the raised microneedle to the skin.

US 12527686 B2GRANTED
A61F7/02

Cooling sheet

Filed:2020-02-14Pub:2026-01-20
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

A cooling sheet comprising: a backing layer; an adhesive agent layer; and a liner layer for protecting the adhesive agent layer, wherein the adhesive agent layer contains water at 65 to 85% by mass based on a total mass of the adhesive agent layer, polyalkylene glycol monooleate at 0.12 to 0.7% by mass based on the total mass of the adhesive agent layer, polyvinyl alcohol at 3 to 10% by mass based on the total mass of the adhesive agent layer, polyacrylic acid at 0.5 to 5% by mass based on the total mass of the adhesive agent layer, and a parahydroxybenzoate at 0.01 to 1% by mass based on the total mass of the adhesive agent layer, and a mass ratio of a content of the polyvinyl alcohol to a content of the polyacrylic acid is in a range of 1.2:1 to 5:1.

US 12440452 B2GRANTED
A61K9/70

Ropinirole-containing patch and method for improving skin permeability of ropinirole

Filed:2021-10-21Pub:2025-10-14
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

A ropinirole-containing patch comprising a backing layer and an adhesive agent layer, wherein the adhesive agent layer comprising: at least one selected from the group consisting of ropinirole and a pharmaceutically acceptable salt thereof; at least one sodium carboxylate selected from the group consisting of sodium pentanoate, disodium glutarate, and sodium hexanoate; and an adhesive agent.

US 20250288537 A1APPLICATION
A61K9/70

DICLOFENAC SODIUM-CONTAINING ADHESIVE PATCH

Filed:2025-06-03Pub:2025-09-18
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

The present invention provides a patch for relieving lumbago, the patch comprising a backing and an adhesive layer laminated on the backing, wherein the adhesive layer comprises an adhesive base and 0.70 to 1.50 mg of diclofenac sodium per cm 2 of application area, and the patch is used by applying the patch once a day to the chest region, the abdominal region, the dorsal region, the brachial region, or the femoral region of a human.

US 20250248949 A1APPLICATION
A61K9/70

METHOD FOR RELIEVING CANCER PAIN

Filed:2025-04-25Pub:2025-08-07
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

Disclosed is a method for relieving cancer pain in a patient. The method comprises administering a patch to a patient in need thereof, wherein the patch comprises a backing layer and an adhesive layer laminated on the backing layer, the adhesive layer comprises an adhesive base and 150 mg to 225 mg of diclofenac sodium, and wherein the patch is applied once a day.

US 20250229070 A1APPLICATION
A61M37/00

MICRONEEDLE SHEET PRODUCTION METHOD AND MICRONEEDLE SHEET

Filed:2025-04-03Pub:2025-07-17
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

A microneedle sheet includes: a sheet body having a main surface; one or more microneedles formed in the sheet body, each microneedle having a tip end; and an X-shaped cut formed in vicinity of the tip end of at least one microneedle among the one or more microneedles.

US 12343329 B2GRANTED
A61K31/407

Method for suppressing production of asenapine-N-oxide

Filed:2020-10-19Pub:2025-07-01
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

The present invention provides a patch comprising an adhesive layer on a backing, the adhesive layer comprising: asenapine or a pharmaceutically acceptable salt thereof; an adhesive base; and at least one selected from the group consisting of thiosulfates, sulfites, and pyrosulfites.

US D1076675 S1APPLICATION

Packing container

Filed:2023-11-15Pub:2025-05-27
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.
US 20250161265 A1APPLICATION
A61K31/381

ROTIGOTINE-CONTAINING ADHESIVE PATCH

Filed:2023-02-15Pub:2025-05-22
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

A rotigotine-containing patch including a backing layer and an adhesive agent layer, wherein the adhesive agent layer comprises at least one selected from the group consisting of rotigotine and a pharmaceutically acceptable salt of rotigotine, and the adhesive agent layer further comprises an adhesive base agent, and at least one selected from the group consisting of thioglycolic acid and a pharmaceutically acceptable salt of thioglycolic acid.

US 20250161229 A1APPLICATION
A61K9/70

POULTICE AND METHOD FOR MANUFACTURING SAME

Filed:2022-12-22Pub:2025-05-22
Applicant:HISAMITSU PHARMACEUTICAL CO., INC.

The present invention relates to a poultice including: a backing layer; and an adhesive agent layer, wherein the adhesive agent layer comprises at least one selected from the group consisting of carboxymethyl cellulose and pharmaceutically acceptable salts thereof; a silicic anhydride; a drug; and a water-soluble polymer; and a particle diameter D 50 at which a cumulative volume in a particle size distribution of the silicic anhydride becomes 50% is 0.2 to 9.0 μm.

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