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Official data from INPI

SÓLIDO AMORFO REDUZIDO DE TRICLORETO DE TITÂNICO, PROCESSO PARA PREPARAR UMA COMPOSIÇÃO CATALÍTICA DE TRICLORETO DE TITÂNIO, COMPONENTE CATALÍTICO, E PROCESSO PARA A POLIMERIZAÇÃO DE ALFA OLEFINAS.

ConcedidaInvention Patent

Application data

Number

PI7906131

Type

Invention Patent

Filing

09/25/1979

Publication

-

Progress at the INPI

  1. Filing09/25/79
  2. Publication
  3. Examination07/27/82
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

W. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

945,929 · 09/26/1978

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

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Pedido de certificado de adição de invenção

#5.1

01/18/1983

RPI 639

Solicitação de exame técnico

#4.1

07/27/1982

RPI 614

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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