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Official data from INPI

FLUÍDO FUNCIONAL, FLUIDO DE TRANSMISSÃO HIDRÁULICA E CONCENTRADO DE ADITIVOS PARA FLUIDOS FUNCIONAIS

Em AnáliseInvention Patent

Application data

Number

PI8705385

Type

Invention Patent

Filing

02/12/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing02/12/87
  2. Publication12/22/87
  3. Examination11/28/89
  4. Allowance06/27/95
  5. Grant02/27/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. C. (pessoa física)

US

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Inventors

C. T. (pessoa física)

US

F. B. (pessoa física)

US

R. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

831,021 · 02/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/28/1989

RPI 997

Notificação de entrada na fase nacional - PCT

#1.3

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 12/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

02/27/1996

RPI 1317

Notificação para pagamento de retribuição

#13.1

11/07/1995

RPI 1301

Deferimento

#9.1

06/27/1995

RPI 1282

Exigência - art. 36 da LPI

#6.1

03/08/1994

RPI 1214

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