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Official data from INPI

PROCESSO APERFEICOADO DE TRATAMENTO TERMICO DE MATERIAL FINAMENTE GRANULADO

Em AnáliseInvention Patent

Application data

Number

PI7603085

Type

Invention Patent

Filing

05/22/1975

Publication

-

Progress at the INPI

  1. Filing05/22/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Terminated11/17/87

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.

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Latest action published by the INPI: 11/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

POLYSIUS AG

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Inventors

G. W. (pessoa física)

R. H. (pessoa física)

S. G. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/17/1987

RPI 891

16.3

03/30/1982

RPI 597

Concessão da patente

#16.1

12/29/1981

RPI 584

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