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Official data from INPI

PROCESSO PARA APLICACAO DE UMA CAMADA CERAMICA DE REVESTIMENTO DUPLO A UM SUBSTRATO EM UMA UNICA OPERACAO DE CALCINACAO;E PRODUTO CERAMICO CALCINADO UMA VEZ

ConcedidaInvention Patent
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Application data

Number

PI7707149

Type

Invention Patent

Filing

10/28/1976

Publication

-
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Progress at the INPI

  1. Filing10/28/76
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant07/26/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FERRO CORP

Inventors

R. R. (pessoa física)

Technical data

IPC Classification

C03C 3/08C03C 3/10C03C 3/14C23D 5/04C23D 5/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1983

RPI 666

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Exigência - art. 36 da LPI

#6.1

05/11/1982

RPI 603

15.0

03/30/1982

RPI 597

Exigência - art. 36 da LPI

#6.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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