Patented Kalkipuri Insect Free Oil Lamps. Fully Covered Removable Lid for Lamp To Prevent the Fall of Insects into Oil. Patent Pending. Regd. Design Patent Nos. 225592 and 301639. Inventor: Kalki, Kalkipuri, Edavannappara, Malappuram Dt. – 673645, Kerala, India. 0483 2724372. Email: kalki@kalkipuri.com. Web. kalkipuri.com.