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Official data from INPI

PROCESSO PARA A POLIMERIZACAO DE ALFA-OLEFINAS

ConcedidaInvention Patent

Application data

Number

PI7803321

Type

Invention Patent

Filing

05/25/1977

Publication

-

Progress at the INPI

  1. Filing05/25/77
  2. Publication
  3. Examination
  4. Allowance01/31/84
  5. Grant03/17/87
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MONTEDISON SPA

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Inventors

B. P. (pessoa física)

L. L. (pessoa física)

S. U. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

110

08/12/1986

RPI 825

120

01/28/1986

RPI 797

Recurso

#12.1

05/02/1984

RPI 706

Deferimento

#9.1

01/31/1984

RPI 693

Exigência - art. 36 da LPI

#6.1

03/22/1983

RPI 648

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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