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Official data from INPI

PO ZEOLITICO CRISTALINO DO TIPO A E PROCESSO PARA PREPARACAO DO MESMO

ConcedidaInvention Patent

Application data

Number

PI7707281

Type

Invention Patent

Filing

11/11/1976

Publication

-

Progress at the INPI

  1. Filing11/11/76
  2. Publication
  3. Examination
  4. Allowance09/02/86
  5. Grant06/02/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 06/02/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DEGUSSA

HENKEL KGAA

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Inventors

K. D. (pessoa física)

P. E. (pessoa física)

R. W. (pessoa física)

S. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/02/1987

RPI 867

Notificação para pagamento de retribuição

#13.1

12/23/1986

RPI 844

Deferimento

#9.1

09/02/1986

RPI 828

Exigência - art. 36 da LPI

#6.1

04/30/1985

RPI 758

14.1

11/08/1983

RPI 681

14.4

11/01/1983

RPI 680

15.0

03/30/1982

RPI 597

Exigência - art. 36 da LPI

#6.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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