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Official data from INPI

PREPARACAO DE ANIDRIDO MALEICO E CATALISADOR PARA O MESMO

Em AnáliseInvention Patent

Application data

Number

PI7805024

Type

Invention Patent

Filing

08/05/1977

Publication

-

Progress at the INPI

  1. Filing08/05/77
  2. Publication
  3. Examination
  4. Allowance11/29/83
  5. Grant05/29/84
  6. Expired12/14/93

The letters patent expired on 12/14/1993: 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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HALCON RES & DEV

Inventors

M. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

10/31/1989

RPI 993

20.4

10/24/1989

RPI 992

Pedido de licença compulsória

#20.1

10/17/1989

RPI 991

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/20/1984

RPI 700

Deferimento

#9.1

11/29/1983

RPI 684

Exigência - art. 36 da LPI

#6.1

05/17/1983

RPI 656

Exigência - art. 36 da LPI

#6.1

09/28/1982

RPI 623

6.2

10/13/1981

RPI 573

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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