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Official data from INPI

EQUIPAMENTOS PARA POLIMERIZACAO DE MONOMEROS DE CLORETO DE VINILA,E PROCESSO DE POLIMERIZACAO QUE USA OS MESMOS

ConcedidaInvention Patent

Application data

Number

PI7805051

Type

Invention Patent

Filing

09/22/1977

Publication

-

Progress at the INPI

  1. Filing09/22/77
  2. Publication
  3. Examination
  4. Allowance02/12/85
  5. Grant07/30/85
  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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO CHEMICAL CO

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Inventors

E. T. (pessoa física)

M. M. (pessoa física)

S. T. (pessoa física)

T. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

05/22/1984

RPI 709

Arquivamento - Art. 36 §1° da LPI

#11.2

05/08/1984

RPI 707

6.2

10/13/1981

RPI 573

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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