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Official data from INPI

REVESTIMENTO DE SILICATO PARA OBJETOS RESISTENTES AO CALOR

Concessão AnuladaInvention Patent
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Application data

Number

PI8007255

Type

Invention Patent

Filing

11/09/1979

Publication

-
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Progress at the INPI

  1. Filing11/09/79
  2. Publication
  3. Examination03/30/82
  4. Allowance05/17/88
  5. Grant11/29/88
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 01/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Leopold + Eppich KG.

DE

Inventors

E. A. (pessoa física)

H. R. (pessoa física)

T. G. (pessoa física)

Technical data

IPC Classification

C23D 5/00C23D 5/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

01/24/1989

RPI 953

Concessão da patente

#16.1

11/29/1988

RPI 945

Notificação para pagamento de retribuição

#13.1

09/06/1988

RPI 933

Deferimento

#9.1

05/17/1988

RPI 917

Exigência - art. 36 da LPI

#6.1

08/18/1987

RPI 878

14.1

05/05/1987

RPI 863

Republicação - classificação IPC

#15.11

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

Solicitação de exame técnico

#4.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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