Inventor

KATSUTOSHI YAMAMOTO

Inventor

Overview

2→

Patents

2023–2024

Patent span

Performing operations

Primary field (CPC B)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B24Bprimary

B24BMachines, devices, or processes for grinding or polishing17%

B29BPreparation or pretreatment of the material to be shaped17%

B29CShaping or joining of plastics17%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts17%

C08JWorking-up17%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1017%

PatentTitleYear

11,890,797Method for preparing unsintered polytetrafluoroethylene film and porous film thereof2024 11,554,458Polishing head, wafer polishing apparatus using the same, and wafer polishing method using the same2023

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2023Patents assigned to SUMCO CORP (1)· patent assignee history

2023–2024Based in JP· patent location history

2024Patents assigned to CHONGQING BOMAN NEW MAT CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CHONGQING BOMAN NEW MAT CO LTD	1	2024
SUMCO CORP	1	2023

Locations

Location	Patents	Span
JP	2	2023–2024