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Official data from INPI

PROCESSO PARA DESCARBURACAO DE ESCORIAS A BASE DE ESR,E PROCESSO PARA REFUSAO DE ELETRO-ESCORIA DE LIGAS

Em AnáliseInvention Patent

Application data

Number

PI7602129

Type

Invention Patent

Filing

04/09/1975

Publication

-

Progress at the INPI

  1. Filing04/09/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Terminated05/14/85

The patent was granted on 12/29/1981 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: 05/14/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CABOT CORP

Inventors

D. R. (pessoa física)

G. R. (pessoa física)

K. H. (pessoa física)

V. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/14/1985

RPI 760

Cessão de direito de exploração

#22.1

11/06/1984

RPI 733

16.3

03/30/1982

RPI 597

Concessão da patente

#16.1

12/29/1981

RPI 584

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