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Official data from INPI

VÁLVULA DE ALIJAMENTO PARA ENGRENAGEM INTEGRAL.

Em AnáliseInvention Patent

Application data

Number

PI8604934

Type

Invention Patent

Filing

10/09/1986

Publication

04/19/1988

Progress at the INPI

  1. Filing10/09/86
  2. Publication04/19/88
  3. Examination07/12/88
  4. Allowance02/19/91
  5. Grant09/24/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TRW Inc

US

See this company's full portfolio

Inventors

W. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

785.983 · 10/10/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/12/1988

RPI 925

Publicação do pedido de patente

#3.1

04/19/1988

RPI 913

Pedido de patente depositado

#2.1

04/07/1987

RPI 859

Carta-patente expirada

#21.1

Patente extinta em 09/10/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

09/24/1991

RPI 1086

Republicação - classificação IPC

#15.11

07/23/1991

RPI 1077

Notificação para pagamento de retribuição

#13.1

06/04/1991

RPI 1070

Deferimento

#9.1

02/19/1991

RPI 1055

Exigência - art. 36 da LPI

#6.1

09/04/1990

RPI 1031

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