Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B81
MICROSTRUCTURAL TECHNOLOGY
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B81C
PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
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1/00
Manufacture or treatment of devices or systems in or on a substrate
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B81C1/00777
Preserve existing structures from alteration, e.g. temporary protection during manufacturing
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B81C1/00785
Avoid chemical alteration, e.g. contamination, oxidation or unwanted etching
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