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Official data from INPI

PROCESSO DE ENCHER MATERIAL PULVERULENTO, POR EXEMPLO CIMENTO, EM SACOS VALVULADOS E MÁQUINA DE ENSACAR APROPRIADA PARA LEVAR A CABO O DITO PROCESSO.

ConcedidaInvention Patent

Application data

Number

PI8206915

Type

Invention Patent

Filing

11/29/1982

Publication

10/04/1983

Progress at the INPI

  1. Filing11/29/82
  2. Publication10/04/83
  3. Examination06/26/84
  4. Allowance04/09/85
  5. Grant07/29/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. L. Smidth S/A. Comercio e Industria

SP, BR

See this company's full portfolio

Inventors

S. A. (pessoa física)

Technical data

IPC Classification

Priority claims

DK

5297/81 · 11/30/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/29/1986

RPI 823

110

04/01/1986

RPI 806

Recurso

#12.1

08/06/1985

RPI 772

Republicação - classificação IPC

#15.11

05/14/1985

RPI 760

Deferimento

#9.1

04/09/1985

RPI 755

Pedido de certificado de adição de invenção

#5.1

11/27/1984

RPI 736

Solicitação de exame técnico

#4.1

06/26/1984

RPI 714

Publicação do pedido de patente

#3.1

10/04/1983

RPI 676

Pedido de patente depositado

#2.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

Patente extinta em 29/11/97

07/01/2008

RPI 1956

20.4

04/02/1991

RPI 1061

20.7

04/02/1991

RPI 1061

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