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Official data from INPI

MECANISMO PARA CONTROLAR FLUXO DE FLUIDO E MECANISMO PARA AJUSTAR A TENSÃO EM ESTEIRA SEM FIM DE VEÍCULO TIPO ESTEIRA

Arquivada/ExtintaInvention PatentPCT · US1989001015

Application data

Number

PI8907875

Type

Invention Patent

Filing

03/09/1989

Publication

10/01/1991

PCT

US1989001015

Progress at the INPI

  1. Filing03/09/89
  2. Publication10/01/91
  3. Examination04/20/93
  4. Allowance01/18/94
  5. Grant10/25/94
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar, Inc.

US

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Inventors

C. A. (pessoa física)

US

T. O. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

297,644 · 01/17/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 09/03/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

05/10/1994

RPI 1223

Deferimento

#9.1

01/18/1994

RPI 1207

Solicitação de exame técnico

#4.1

04/20/1993

RPI 1168

Notificação de entrada na fase nacional - PCT

#1.3

10/01/1991

RPI 1087

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