序号

Organization

Patents

1

Schlumberger Limited

76

2

Halliburton Company

54

3

General Electric Company

52

4

National-Oilwell Varco, Inc.

35

5

Stanley Black & Decker, Inc.

14

6

BP plc

13

7

T. Clarke plc

11

8

Robert Bosch GmbH

8

9

Weatherford International Ltd.

7

10

Techtronic Industries Co. Ltd.

7

11

Olympic Corporation

7

12

Hilti Aktiengesellschaft

6

13

Helmerich & Payne, Inc.

6

14

Marathon Oil Corporation

6

15

Atlas Copco AB

5

16

Makita Corporation

5

17

Panasonic Corporation

5

18

PANJIN HESHENG DADI PETROLEUM TECHNOLOGY CO., LTD.

5

19

Pre Vision

4

20

NABORS DRILLING TECHNOLOGIES USA, INC.

4