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Official data from INPI

PROCESSO E APARELHO EM CIRCUITO FECHADO PARA REVESTIR O INTERIOR DE UM TANQUE.

Em AnáliseInvention Patent

Application data

Number

PI7808763

Type

Invention Patent

Filing

12/13/1978

Publication

-

Progress at the INPI

  1. Filing12/13/78
  2. Publication
  3. Examination06/08/82
  4. Allowance05/31/83
  5. Grant01/31/84
  6. Terminated06/14/88

The patent was granted on 01/31/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar Tractor Co.

US

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Inventors

W. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

78/00209 · 12/13/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/31/1983

RPI 658

Solicitação de exame técnico

#4.1

06/08/1982

RPI 607

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