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Official data from INPI

PROCESSO E INSTALACAO DE TRATAMENTO TERMICO DE MATERIAL DE GRAO FINO

ConcedidaInvention Patent

Application data

Number

PI8301367

Type

Invention Patent

Filing

03/31/1982

Publication

11/29/1983

Progress at the INPI

  1. Filing03/31/82
  2. Publication11/29/83
  3. Examination04/23/85
  4. Allowance02/04/86
  5. Grant08/26/86
  6. Terminated02/18/92

The patent was granted on 08/26/1986 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: 08/26/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KRUPP POLYSIUS AG [DE]

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Inventors

K. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/26/1986

RPI 827

Notificação para pagamento de retribuição

#13.1

06/24/1986

RPI 818

Deferimento

#9.1

02/04/1986

RPI 798

Republicação - classificação IPC

#15.11

01/14/1986

RPI 795

Solicitação de exame técnico

#4.1

04/23/1985

RPI 757

Publicação do pedido de patente

#3.1

11/29/1983

RPI 684

Pedido de patente depositado

#2.1

05/03/1983

RPI 654

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

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