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Official data from INPI

NÚCLEO DE PERMUTADOR DE CALOR COM TAMPAS EXTREMAS.

Em AnáliseInvention Patent

Application data

Number

PI8008910

Type

Invention Patent

Filing

11/07/1980

Publication

10/20/1981

Progress at the INPI

  1. Filing11/07/80
  2. Publication10/20/81
  3. Examination05/31/83
  4. Allowance02/12/85
  5. Grant10/01/85
  6. Terminated09/26/89

The patent was granted on 10/01/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar Tractor Co.

US

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Inventors

A. G. (pessoa física)

L. H. (pessoa física)

M. C. (pessoa física)

Technical data

IPC Classification

Priority claims

US

79/01060 · 12/03/1979

US

80/01516 · 11/07/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

10/01/1985

RPI 780

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

02/21/1984

RPI 696

Solicitação de exame técnico

#4.1

05/31/1983

RPI 658

Notificação de entrada na fase nacional - PCT

#1.3

10/20/1981

RPI 574

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