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Official data from INPI

SISTEMA DE CONTROLE DE TRAVAMENTO DE DIFERENCIAL

Em AnáliseInvention Patent

Application data

Number

PI8106262

Type

Invention Patent

Filing

09/25/1981

Publication

11/17/1981

Progress at the INPI

  1. Filing09/25/81
  2. Publication11/17/81
  3. Examination09/13/83
  4. Allowance08/21/84
  5. Grant04/30/85
  6. In force09/25/01

The patent is in force and subject to a compulsory licence request: third parties have asked for authorisation to exploit the technology.

Protection valid until:09/25/2001

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Latest action published by the INPI: 10/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Massey-Ferguson Services N.V.

NL

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Inventors

M. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

06/115.469 · 01/25/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

4.1.1

10/13/1987

RPI 886

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/21/1984

RPI 722

4.1.2

11/01/1983

RPI 680

Solicitação de exame técnico

#4.1

09/13/1983

RPI 673

Notificação de entrada na fase nacional - PCT

#1.3

11/17/1981

RPI 578

Pedido de licença compulsória

#20.1

07/05/1994

RPI 1231

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