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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8103881

Type

Invention Patent

Filing

06/19/1981

Publication

03/09/1982
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Progress at the INPI

  1. Filing06/19/81
  2. Publication03/09/82
  3. Examination06/22/82
  4. Allowance04/22/87
  5. Grant09/29/87
  6. Expired10/08/96

The letters patent expired on 10/08/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Applied Industrial Materials Luxembourg S.A. (Aimcor Luxembourg S.A.)

LU

Inventors

L. G. (pessoa física)

Technical data

IPC Classification

C01B 33/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Deferimento

#9.1

04/22/1987

RPI 861

Republicação - classificação IPC

#15.11

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

02/18/1986

RPI 800

Exigência - art. 36 da LPI

#6.1

07/30/1985

RPI 771

Solicitação de exame técnico

#4.1

06/22/1982

RPI 609

Publicação do pedido de patente

#3.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

20.4

10/27/1992

RPI 1143

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