Inventor
Evan Wahyu KRISTIYANTO
Inventor
ID
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Bprimary
C22BProduction and refining of metals26%
Y02PClimate change mitigation technologies in the production or processing of goods24%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
B01DSeparation8%
C01GCompounds containing metals not covered by subclasses c01d or c01f6%
B08BCleaning in general4%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds4%
G05DSystems for controlling or regulating non-electric variables4%
B02CCrushing, pulverising, or disintegrating in general2%
B03BSeparating solid materials using liquids or using pneumatic tables or jigs2%
PatentTitleYear
12,595,530System and method for regulating aluminum precipitation during high-pressure acid leaching of laterite nickel ore202612,521,643System for preparing new energy Ni--Co--Mn raw material from laterite nickel ore202612,473,611Dynamic optimization method for acid-to-ore ratio in high-pressure leaching of laterite nickel ore202512,404,567Treatment method for laterite nickel ore by curing and roasting-water leaching-atmospheric pressure acid leaching202512,391,574Method for continuously preparing mixed hydroxide precipitate from laterite nickel ore by hydrometallurgy202512,378,639Process and system for recovering manganese from high-pressure leaching system of laterite nickel ore202512,344,941Automatic descaling system for high-pressure reactor of laterite nickel ore202512,343,734Cylindrical ore washing machine used for hydrometallurgical smelting of laterite nickel ore202512,325,898High-pressure reactor acid adding system for laterite nickel ore hydrometallurgy202512,325,895Method for dynamically controlling high-pressure leaching reaction condition of laterite nickel ore202512,311,351Limestone slurry and lime milk preparing device for hydrometallurgy of laterite nickel ore202512,297,125Method for preparing battery-grade nickel-cobalt-manganese sulfate crystals from low nickel matte202512,286,360Cobalt-manganese sulfate solution from low nickel matte2025Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2025–2026Patents assigned to GEM CO LTD (13)· patent assignee history
2025–2026Patents assigned to PT ESG NEW ENERGY MAT (13)· patent assignee history
2025–2026Patents assigned to PT GEM INDONESIA NEW ENERGY MAT (13)· patent assignee history
2025–2026Patents assigned to PT QMB NEW ENERGY MAT (13)· patent assignee history
2025–2026Based in ID· patent location history
2026Patents assigned to PE ESG NEW ENERGY MAT (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEM CO LTD | 13 | 2025–2026 |
| PT ESG NEW ENERGY MAT | 13 | 2025–2026 |
| PT GEM INDONESIA NEW ENERGY MAT | 13 | 2025–2026 |
| PT QMB NEW ENERGY MAT | 13 | 2025–2026 |
| PE ESG NEW ENERGY MAT | 1 | 2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| ID | 13 | 2025–2026 |