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Official data from INPI

MASSAS ARMAZENAVEIS SOB EXCLUSAO DE AGUA QUE RETICULAM A ELASTOMEROS NA ADICAO DE AGUA

Em AnáliseInvention Patent

Application data

Number

PI7805201

Type

Invention Patent

Filing

08/18/1977

Publication

-

Progress at the INPI

  1. Filing08/18/77
  2. Publication
  3. Examination
  4. Allowance05/10/83
  5. Grant11/29/83
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WACKER CHEMIE GMBH

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Inventors

B. E. (pessoa física)

B. K. (pessoa física)

L. E. (pessoa física)

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

11/28/1989

RPI 997

Anuidade - prazo legal encerrado

#18.2

08/29/1989

RPI 984

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/10/1983

RPI 655

Exigência - art. 36 da LPI

#6.1

11/09/1982

RPI 629

Deferimento

#9.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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