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Official data from INPI

ARTIGO DE SUPERLIGA TERMICAMENTE TRATADA E RESPECTIVO PROCESSO DE PRODUCAO E ARTIGO INTERMEDIARIO DE CRISTAIS SIMPLES

ConcedidaInvention Patent
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Application data

Number

PI7803254

Type

Invention Patent

Filing

05/25/1977

Publication

-
View on INPI

Progress at the INPI

  1. Filing05/25/77
  2. Publication
  3. Examination
  4. Allowance08/28/84
  5. Grant10/01/85
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNITED RECH CORP

Inventors

D. D. (pessoa física)

O. W. (pessoa física)

Technical data

IPC Classification

C22C 19/05

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

08/28/1984

RPI 723

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

15.0

06/08/1982

RPI 607

Exigência - art. 36 da LPI

#6.1

05/04/1982

RPI 602

6.2

12/15/1981

RPI 582

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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