Patent Portfolio
Patent-Protected Manufacturing Technology
Huanghai Pharmaceutical Instruments has built a portfolio of 100+ pharmaceutical engineering patents across more than four decades of R&D. The patents listed below are the granted and pending inventions that directly protect technologies in our active production-equipment lines — ODF (oral dissolving film) coating and cutting, transdermal patch (TDDS) manufacturing, and pharmaceutical laser drilling.
Each entry maps to specific equipment models so engineering and procurement teams can verify exactly which patented technology is built into the machine they are evaluating. All patent records are publicly searchable on Google Patents — direct links are provided in every card.
MJ Pro Series — ODF Coating Machines
Applies to MJ150 and MJ150-Lab.
CN117323228A — Multi-Formula Stripe-Coating Technology for ODF
| Technology | Enables simultaneous application of up to two distinct ODF formulations in a single coating pass, eliminating the intermediate drying steps required by conventional multi-layer processes. Incorporates a blade-coating mechanism (0.3–0.4 mm gap) with a four-zone hot-air drying system (30–150 °C). |
|---|---|
| Application | MJ150 / MJ150-Lab — Multi-formula stripe coating capability |
| Verify | patents.google.com/patent/CN117323228A/en |
CN201668734U — Hot-Air Gradient Drying for ODF
| Technology | Hot-air parallel-flow drying system for ODF coating machines, achieving continuous operation and uniform film thickness. Covers the main chamber, auxiliary chamber, peristaltic pump, flat blade, conveyor belt, heating plate, exhaust fan, and winding mechanism configuration that remains the engineering basis of modern ODF dryers. |
|---|---|
| Application | MJ150 / MJ150-Lab / MJ180 — Drying tunnel architecture |
| Verify | patents.google.com/patent/CN201668734U/en |
CN103083284B — Effervescent Multi-Strip Film Formulation
| Technology | Alternating acid/alkaline stripe film combination dosage form that generates effervescence on contact with water, masking bitter taste while improving drug dissolution rate. Particularly suited to pediatric formulations and incompatible multi-component fixed-dose combinations — a direct complement to the multi-formula stripe-coating equipment capability. |
|---|---|
| Application | MJ150 / MJ150-Lab — Formulation example enabled by the multi-stripe coating platform |
| Verify | patents.google.com/patent/CN103083284B/en |
Transdermal Patch (TDDS) Manufacturing
Applies to TDDS production lines based on the MJ Pro platform with TDDS-specific tooling.
CN119869871A — TDDS Coating-Drying-Lamination-Winding Integrated Equipment
| Technology | Integrated continuous-process equipment combining transdermal drug delivery system (TDDS) coating, drying, lamination, and winding operations in a single production unit, reducing material handling and contamination risk. |
|---|---|
| Application | Transdermal patch manufacturing lines |
| Verify | patents.google.com/patent/CN119869871A/en |
CN2586476Y — Bilayer Adhesive Patch Coating
| Technology | Bilayer adhesive coating process for transdermal patch manufacturing, establishing the foundational approach to controlled-release adhesive film coating used in modern TDDS equipment. |
|---|---|
| Application | Transdermal patch coating architecture |
| Verify | patents.google.com/patent/CN2586476Y/en |
Olando K3-2 — Pharmaceutical Laser Drilling System
Applies to Olando K3-2 laser drilling system for osmotic-pump controlled-release tablets.
CN2642449Y — Pharmaceutical Laser Drilling for Osmotic-Pump Tablets
| Technology | Computer-controlled automated laser drilling system for osmotic-pump controlled-release tablets, integrating photoelectric orientation detection, rotating carousel, camera-based quality inspection, and automatic sorting of conforming vs. defective tablets. The seminal patent for pharmaceutical laser drilling in China. |
|---|---|
| Application | Olando K3-2 — Core architecture |
| Verify | patents.google.com/patent/CN2642449Y/en |
CN117921216A — Auto-Flip Dual-Sided Laser Drilling System
| Technology | Automated tablet orientation recognition with pneumatic flip mechanism for dual-chamber osmotic-pump tablets, followed by laser drilling and multi-station inspection. Addresses the precision positioning challenge in high-efficiency double-sided laser drilling for osmotic-pump tablet manufacturing. |
|---|---|
| Application | Olando K3-2 — Next-generation auto-flip configuration (pending) |
| Verify | patents.google.com/patent/CN117921216A/en |
Equipment ↔ Patent Quick Map
A summary of which active product lines are covered by which patented technologies.
| Equipment | Patent-Protected Technologies |
|---|---|
| MJ150 / MJ150-Lab (ODF coating) | CN117323228A (multi-formula stripe coating) + CN201668734U (hot-air drying) + CN103083284B (effervescent multi-stripe formulation) |
| MJ180 (ODF cutting / heat sealing) | CN201668734U (drying tunnel architecture, shared with MJ Pro) |
| TDDS production lines (MJ Pro platform with TDDS tooling) | CN119869871A (integrated coating-drying-lamination-winding) + CN2586476Y (bilayer adhesive coating) + CN201668734U (drying) |
| Olando K3-2 (laser drilling) | CN2642449Y (osmotic-pump laser drilling) + CN117921216A (auto-flip dual-sided drilling, pending) |
Technical Inquiries
For technical detail on how these patented technologies are integrated into specific equipment configurations — or to discuss how Huanghai's manufacturing solutions can meet your production requirements — please contact us directly.