| Company Name | Country of origin of the patent applications | Number of patent applications |
| Sumitomo Electric Ind Ltd | Japan | 5 |
| China Petroleum & Chem Corp | China | 4 |
| Sabic Global Technologies B. V. | United States | 4 |
| Asahi Kasei Corp | Japan | 3 |
| Abengoa Water Sl | Spain | 2 |
| Beijing Zhongkeruisheng Resources Enviro | China | 2 |
| General Electric Coa | China and United States | 2 |
| Membrane Distillation Desalination Co Ltda | China and Canada | 2 |
| Milton Roy Co | United States | 2 |
| Toray Chem Korea Inc | Korea | 2 |