Happi staff09.19.19
• US Patent No. 10,391,045 B2; Ian Thomas Dell of Darlington, Great Britain, has been awarded a US patent for a moderately viscous liquid suitable for use as an insect repellent. It is comprised of PMD-citronellal acetal, isopulegol and p-menthane-3,8-diol, which approximates to a ternary eutectic and is liquid at ambient temperatures.