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Official data from INPI

MATRIZ RETENTORA DE ELETROLITO DE CARBONETO DE SILOCIO PARA CELULAS DE COMBUSTIVEL

Em AnáliseInvention Patent

Application data

Number

PI7605469

Type

Invention Patent

Filing

09/02/1975

Publication

-

Progress at the INPI

  1. Filing09/02/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/26/82
  6. Terminated05/08/90

The patent was granted on 01/26/1982 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNITED TECHNOLOGIES CORP

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Inventors

B. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/04/1982

RPI 602

Concessão da patente

#16.1

01/26/1982

RPI 588

Anuidade - prazo legal encerrado

#18.2

05/08/1990

RPI 1017

18.8

03/20/1990

RPI 1010

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