EXCELL CORPORATION
24Patents
5Active
24Granted
48Portfolio score
Filing activity: Jun 29, 1979 → Aug 24, 2021 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4239474A | Apparatus for molding a plastic pipe | Performing Operations; Transporting | 26 | Expired |
| US4907957A | Molding apparatus for forming a parison and product of differing materials | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5723828A | Hollow plastic product having a sound attenuator | Performing Operations; Transporting | 21 | Expired |
| US4659531A | Method and apparatus for manufacturing a hollow plastic product | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5699835A | Multi-layer plastic hollow pipe | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4362688A | Method for molding a plastic pipe | Performing Operations; Transporting | 15 | Expired |
| US5851456A | Method for manufacturing a multi-layer plastic product | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5156796A | Forming hollow plastic product partially different in composition and its manufacturing apparatus | Performing Operations; Transporting | 12 | Expired |
| US5198174A | Method for producing a hollow plastic product having a radially extending portion | Performing Operations; Transporting | 12 | Expired |
| US6119731A | Hollow plastic product | Performing Operations; Transporting | 10 | Expired |
| US6537484B2 | Method for manufacturing a multi-layer plastic pipe | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4550008A | Method for molding plastic products | Performing Operations; Transporting | 8 | Expired |
| US6251332A | Method for manufacturing a multilayer plastic pipe | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5653265A | Hollow plastic product | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6319454A | Method and apparatus for manufacturing a hollow plastic product | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5720525A | Vehicle seat with anti-rattle arm rest | Performing Operations; Transporting | 5 | Expired |
| US7316427B2 | Hollow plastic product having a connector pipe | Performing Operations; Transporting | 4 | Expired |
| US7678324B2 | Method for forming a hollow plastic product | Performing Operations; Transporting | 1 | Active |
| US4975048A | Heating apparatus | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US10221757B2 | Intake joint structure for turbocharger | Emerging Cross-Sectional Technologies | 0 | Active |
| US12140199B2 | Dust cover, suspension device, and method for manufacturing dust cover | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US4681525A | Apparatus for molding plastic products | Performing Operations; Transporting | 0 | Expired |
| US9358718B2 | Shielding structure of a through-hole formed in a wall of a plastic hollow product | Performing Operations; Transporting | 0 | Active |
| US9822740B2 | Air intake duct and method for producing same | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.