MUMBAI, India, Nov. 28 -- Intellectual Property India has published a patent application (202531107193 A) filed by Siksha O Anusandhan, Bhubaneswar, Orissa, on Nov. 5, for 'device for in-house reprocessing of dental gypsum waste.'
Inventor(s) include Dr. Debarchita Sarangi.
The application for the patent was published on Nov. 28, under issue no. 48/2025.
According to the abstract released by the Intellectual Property India: "A device for in-house reprocessing of dental gypsum waste includes a housing 101 with a hopper 102 storing waste dental gypsum and an input means 103 for commands regarding gypsum type, a primary iris lid 104 controls gypsum release onto a first conveyor 105, transferring it to a disinfection unit 106, a secondary iris lid 107 releases disinfected gypsum onto a second conveyor leading to a first dehydration unit 109, a tertiary iris lid 111 transfers dehydrated gypsum onto a third conveyor 112 for pH neutralization using reducing agents, a three-way valve 116 directs the powder to either the first or second crystallinity restoration module, a method involves disinfection with sodium hypochlorite, dehydration by heating, pH neutralization, mechanical pulverization and sieving, crystallinity restoration, additional dehydration for beta gypsum, supplementation with colorants and additives, evaluation of strength and setting time, labeling as Educational Grade or Non-Medical Grade."
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