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Official data from INPI

VÁLVULA DE CONTROLE DE FLUÍDO

Em AnáliseInvention PatentPCT · US1986001709

Application data

Number

PI8607359

Type

Invention Patent

Filing

08/21/1986

Publication

08/15/1989

PCT

US1986001709

Progress at the INPI

  1. Filing08/21/86
  2. Publication08/15/89
  3. Examination03/06/90
  4. Allowance10/16/90
  5. Grant04/30/91
  6. Terminated10/03/95

The patent was granted on 04/30/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar, Inc.

US

See this company's full portfolio

Inventors

E. L. (pessoa física)

O. M. (pessoa física)

Technical data

IPC Classification

Priority claims

US

871,957 · 06/09/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

08/15/1989

RPI 982

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/29/1991

RPI 1052

Deferimento

#9.1

10/16/1990

RPI 1037

Solicitação de exame técnico

#4.1

03/06/1990

RPI 1008

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