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Official data from INPI

FOLHA DE CAMADAS MÚLTIPLAS SELÁVEL E SEU EMPREGO

Em AnáliseInvention Patent

Application data

Number

PI8006632

Type

Invention Patent

Filing

10/15/1980

Publication

-

Progress at the INPI

  1. Filing10/15/80
  2. Publication
  3. Examination07/13/82
  4. Allowance04/09/85
  5. Grant08/27/85
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 11/10/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wolff Walsrode AG

DE

See this company's full portfolio

Inventors

E. G. (pessoa física)

R. H. (pessoa física)

S. I. (pessoa física)

Technical data

Priority claims

DE

P 29 41 909.8 · 10/17/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

22.2

11/10/1987

RPI 890

16.3

10/29/1985

RPI 784

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

07/30/1985

RPI 771

Deferimento

#9.1

04/09/1985

RPI 755

Exigência - art. 36 da LPI

#6.1

07/17/1984

RPI 717

6.2

01/11/1983

RPI 638

Solicitação de exame técnico

#4.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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